401k Plan data: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II plan

NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 401k Plan overview

Plan Name	NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II
Plan identification number	007

NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II Benefits

401k Plan Type

Defined Contribution Pension

Plan Features/Benefits

Age/Service Weighted or new comparability or similar plan - Age/Service Weighted Plan: Allocations are based on age, service, or age and service. New comparability or similar plan: Allocations are based on participant classifications and a classification(s) consists entirely or predominantly of highly compensated employees; or the plan provides an additional allocation rate on compensation above a specified threshold, and the theshold or additional rate exceeds the maximum threshold or rate allowed under the permitted disparity rules of section 401(l).
Profit-sharing
ERISA section 404(c) Plan - This plan, or any part of it is intended to meet the conditions of 29 CFR 2550.404c-1.
Partial participant-directed account plan - Participants have the opportunity to direct the investment of a portion of the assets allocated to their individual accounts, regardless of whether 29 CFR 2550.404c-1 is intended to be met.
Code section 401(k) feature - A cash or deferred arrangement described in Code section 401(k) that is part of a qualified defined contribution plan that provides for an election by employees to defer part of their compensation or receive these amounts in cash.
Code section 401(m) arrangement - Employee contributions are allocated to separate accounts under the plan or employer contributions are based, in whole or in part, on employee deferrals or contribtions to the plan. Not applicable if plan is 401(k) plan with only QNECs and/or QMACs. Also not applicable if Code section 403(b)(1), 403(b)(7) or 408 arrangements/accounts/annuities.
ESOP other than a leveraged ESOP - A completed Schedule E must be attached to a Form 5500 filed for an Employee Stock Ownership Plan (ESOP).
Participant-directed brokerage accounts provided as an investment option under the plan.
Plan provides for automatic enrollment in plan that has employee contributions deducted from payroll.
Total or partial participant-directed account plan - plan uses default investment account for participants who fail to direct assets in their account.
Plan sponsor(s) is (are) a member(s) of a controlled group (Code sections 414(b), (c), or (m)).

401k Sponsoring company profile

NATIONAL GRID USA SERVICE COMPANY, INC. has sponsored the creation of one or more 401k plans.

Company Name: NATIONAL GRID USA SERVICE COMPANY, INC.

Employer identification number (EIN): 041663150

NAIC Classification: 221100

Form 5500 Filing Information

Submission information for form 5500 for 401k plan NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II

Plan id# Filing Submission Date Name of Administrator Date Administrator Signed Name of Company Sponsor Date Sponsor Signed
007 2022-01-01
007 2021-01-01
007 2020-01-01
007 2019-01-01
007 2018-01-01
007 2017-01-01 CHARLES DEROSA
007 2016-01-01 CHARLES DEROSA
007 2015-01-01 CHARLES DEROSA
007 2014-01-01 LORI SANTORO
007 2013-01-01 CHARLES DEROSA
007 2012-01-01 CHARLES DEROSA
007 2011-01-01 LORRAINE LYNCH
007 2009-01-01 CHARLES DEROSA

Plan Statistics for NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II

401k plan membership statisitcs for NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II

Measure Date Value
2022: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2022 401k membership
Total participants, beginning-of-year 2022-01-01 23,514
Total number of active participants reported on line 7a of the Form 5500 2022-01-01 16,248
Number of retired or separated participants receiving benefits 2022-01-01 1,327
Number of other retired or separated participants entitled to future benefits 2022-01-01 5,502
Total of all active and inactive participants 2022-01-01 23,077
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2022-01-01 372
Total participants 2022-01-01 23,449
Number of participants with account balances 2022-01-01 22,900
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2022-01-01 347
2021: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2021 401k membership
Total participants, beginning-of-year 2021-01-01 12,619
Total number of active participants reported on line 7a of the Form 5500 2021-01-01 20,346
Number of retired or separated participants receiving benefits 2021-01-01 712
Number of other retired or separated participants entitled to future benefits 2021-01-01 2,274
Total of all active and inactive participants 2021-01-01 23,332
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2021-01-01 182
Total participants 2021-01-01 23,514
Number of participants with account balances 2021-01-01 23,194
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2021-01-01 131
2020: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2020 401k membership
Total participants, beginning-of-year 2020-01-01 12,787
Total number of active participants reported on line 7a of the Form 5500 2020-01-01 9,853
Number of retired or separated participants receiving benefits 2020-01-01 695
Number of other retired or separated participants entitled to future benefits 2020-01-01 1,921
Total of all active and inactive participants 2020-01-01 12,469
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2020-01-01 150
Total participants 2020-01-01 12,619
Number of participants with account balances 2020-01-01 12,386
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2020-01-01 122
2019: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2019 401k membership
Total participants, beginning-of-year 2019-01-01 12,753
Total number of active participants reported on line 7a of the Form 5500 2019-01-01 10,076
Number of retired or separated participants receiving benefits 2019-01-01 732
Number of other retired or separated participants entitled to future benefits 2019-01-01 1,845
Total of all active and inactive participants 2019-01-01 12,653
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2019-01-01 134
Total participants 2019-01-01 12,787
Number of participants with account balances 2019-01-01 12,535
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2019-01-01 159
2018: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2018 401k membership
Total participants, beginning-of-year 2018-01-01 12,652
Total number of active participants reported on line 7a of the Form 5500 2018-01-01 10,074
Number of retired or separated participants receiving benefits 2018-01-01 686
Number of other retired or separated participants entitled to future benefits 2018-01-01 1,871
Total of all active and inactive participants 2018-01-01 12,631
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2018-01-01 122
Total participants 2018-01-01 12,753
Number of participants with account balances 2018-01-01 12,482
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2018-01-01 136
2017: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2017 401k membership
Total participants, beginning-of-year 2017-01-01 12,363
Total number of active participants reported on line 7a of the Form 5500 2017-01-01 10,106
Number of retired or separated participants receiving benefits 2017-01-01 655
Number of other retired or separated participants entitled to future benefits 2017-01-01 1,781
Total of all active and inactive participants 2017-01-01 12,542
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2017-01-01 110
Total participants 2017-01-01 12,652
Number of participants with account balances 2017-01-01 12,378
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2017-01-01 99
2016: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2016 401k membership
Total participants, beginning-of-year 2016-01-01 12,088
Total number of active participants reported on line 7a of the Form 5500 2016-01-01 9,816
Number of retired or separated participants receiving benefits 2016-01-01 598
Number of other retired or separated participants entitled to future benefits 2016-01-01 1,846
Total of all active and inactive participants 2016-01-01 12,260
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2016-01-01 103
Total participants 2016-01-01 12,363
Number of participants with account balances 2016-01-01 12,040
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2016-01-01 113
2015: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2015 401k membership
Total participants, beginning-of-year 2015-01-01 11,846
Total number of active participants reported on line 7a of the Form 5500 2015-01-01 9,552
Number of retired or separated participants receiving benefits 2015-01-01 560
Number of other retired or separated participants entitled to future benefits 2015-01-01 1,877
Total of all active and inactive participants 2015-01-01 11,989
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2015-01-01 99
Total participants 2015-01-01 12,088
Number of participants with account balances 2015-01-01 11,823
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2015-01-01 86
2014: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2014 401k membership
Total participants, beginning-of-year 2014-01-01 12,306
Total number of active participants reported on line 7a of the Form 5500 2014-01-01 9,324
Number of retired or separated participants receiving benefits 2014-01-01 525
Number of other retired or separated participants entitled to future benefits 2014-01-01 1,913
Total of all active and inactive participants 2014-01-01 11,762
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2014-01-01 84
Total participants 2014-01-01 11,846
Number of participants with account balances 2014-01-01 11,660
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2014-01-01 44
2013: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2013 401k membership
Total participants, beginning-of-year 2013-01-01 12,108
Total number of active participants reported on line 7a of the Form 5500 2013-01-01 8,743
Number of retired or separated participants receiving benefits 2013-01-01 525
Number of other retired or separated participants entitled to future benefits 2013-01-01 2,949
Total of all active and inactive participants 2013-01-01 12,217
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2013-01-01 89
Total participants 2013-01-01 12,306
Number of participants with account balances 2013-01-01 12,138
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2013-01-01 12
2012: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2012 401k membership
Total participants, beginning-of-year 2012-01-01 12,233
Total number of active participants reported on line 7a of the Form 5500 2012-01-01 10,002
Number of retired or separated participants receiving benefits 2012-01-01 479
Number of other retired or separated participants entitled to future benefits 2012-01-01 1,533
Total of all active and inactive participants 2012-01-01 12,014
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2012-01-01 94
Total participants 2012-01-01 12,108
Number of participants with account balances 2012-01-01 11,931
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2012-01-01 29
2011: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2011 401k membership
Total participants, beginning-of-year 2011-01-01 12,185
Total number of active participants reported on line 7a of the Form 5500 2011-01-01 10,149
Number of retired or separated participants receiving benefits 2011-01-01 483
Number of other retired or separated participants entitled to future benefits 2011-01-01 1,507
Total of all active and inactive participants 2011-01-01 12,139
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2011-01-01 94
Total participants 2011-01-01 12,233
Number of participants with account balances 2011-01-01 12,062
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2011-01-01 75
2009: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2009 401k membership
Total participants, beginning-of-year 2009-01-01 12,254
Total number of active participants reported on line 7a of the Form 5500 2009-01-01 10,704
Number of retired or separated participants receiving benefits 2009-01-01 621
Number of other retired or separated participants entitled to future benefits 2009-01-01 1,864
Total of all active and inactive participants 2009-01-01 13,189
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits 2009-01-01 42
Total participants 2009-01-01 13,231
Number of participants with account balances 2009-01-01 12,641
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested 2009-01-01 24

Measure	Date	Value
2022: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2022 401k membership
Total participants, beginning-of-year	2022-01-01	23,514
Total number of active participants reported on line 7a of the Form 5500	2022-01-01	16,248
Number of retired or separated participants receiving benefits	2022-01-01	1,327
Number of other retired or separated participants entitled to future benefits	2022-01-01	5,502
Total of all active and inactive participants	2022-01-01	23,077
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2022-01-01	372
Total participants	2022-01-01	23,449
Number of participants with account balances	2022-01-01	22,900
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2022-01-01	347
2021: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2021 401k membership
Total participants, beginning-of-year	2021-01-01	12,619
Total number of active participants reported on line 7a of the Form 5500	2021-01-01	20,346
Number of retired or separated participants receiving benefits	2021-01-01	712
Number of other retired or separated participants entitled to future benefits	2021-01-01	2,274
Total of all active and inactive participants	2021-01-01	23,332
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2021-01-01	182
Total participants	2021-01-01	23,514
Number of participants with account balances	2021-01-01	23,194
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2021-01-01	131
2020: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2020 401k membership
Total participants, beginning-of-year	2020-01-01	12,787
Total number of active participants reported on line 7a of the Form 5500	2020-01-01	9,853
Number of retired or separated participants receiving benefits	2020-01-01	695
Number of other retired or separated participants entitled to future benefits	2020-01-01	1,921
Total of all active and inactive participants	2020-01-01	12,469
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2020-01-01	150
Total participants	2020-01-01	12,619
Number of participants with account balances	2020-01-01	12,386
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2020-01-01	122
2019: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2019 401k membership
Total participants, beginning-of-year	2019-01-01	12,753
Total number of active participants reported on line 7a of the Form 5500	2019-01-01	10,076
Number of retired or separated participants receiving benefits	2019-01-01	732
Number of other retired or separated participants entitled to future benefits	2019-01-01	1,845
Total of all active and inactive participants	2019-01-01	12,653
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2019-01-01	134
Total participants	2019-01-01	12,787
Number of participants with account balances	2019-01-01	12,535
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2019-01-01	159
2018: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2018 401k membership
Total participants, beginning-of-year	2018-01-01	12,652
Total number of active participants reported on line 7a of the Form 5500	2018-01-01	10,074
Number of retired or separated participants receiving benefits	2018-01-01	686
Number of other retired or separated participants entitled to future benefits	2018-01-01	1,871
Total of all active and inactive participants	2018-01-01	12,631
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2018-01-01	122
Total participants	2018-01-01	12,753
Number of participants with account balances	2018-01-01	12,482
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2018-01-01	136
2017: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2017 401k membership
Total participants, beginning-of-year	2017-01-01	12,363
Total number of active participants reported on line 7a of the Form 5500	2017-01-01	10,106
Number of retired or separated participants receiving benefits	2017-01-01	655
Number of other retired or separated participants entitled to future benefits	2017-01-01	1,781
Total of all active and inactive participants	2017-01-01	12,542
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2017-01-01	110
Total participants	2017-01-01	12,652
Number of participants with account balances	2017-01-01	12,378
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2017-01-01	99
2016: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2016 401k membership
Total participants, beginning-of-year	2016-01-01	12,088
Total number of active participants reported on line 7a of the Form 5500	2016-01-01	9,816
Number of retired or separated participants receiving benefits	2016-01-01	598
Number of other retired or separated participants entitled to future benefits	2016-01-01	1,846
Total of all active and inactive participants	2016-01-01	12,260
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2016-01-01	103
Total participants	2016-01-01	12,363
Number of participants with account balances	2016-01-01	12,040
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2016-01-01	113
2015: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2015 401k membership
Total participants, beginning-of-year	2015-01-01	11,846
Total number of active participants reported on line 7a of the Form 5500	2015-01-01	9,552
Number of retired or separated participants receiving benefits	2015-01-01	560
Number of other retired or separated participants entitled to future benefits	2015-01-01	1,877
Total of all active and inactive participants	2015-01-01	11,989
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2015-01-01	99
Total participants	2015-01-01	12,088
Number of participants with account balances	2015-01-01	11,823
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2015-01-01	86
2014: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2014 401k membership
Total participants, beginning-of-year	2014-01-01	12,306
Total number of active participants reported on line 7a of the Form 5500	2014-01-01	9,324
Number of retired or separated participants receiving benefits	2014-01-01	525
Number of other retired or separated participants entitled to future benefits	2014-01-01	1,913
Total of all active and inactive participants	2014-01-01	11,762
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2014-01-01	84
Total participants	2014-01-01	11,846
Number of participants with account balances	2014-01-01	11,660
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2014-01-01	44
2013: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2013 401k membership
Total participants, beginning-of-year	2013-01-01	12,108
Total number of active participants reported on line 7a of the Form 5500	2013-01-01	8,743
Number of retired or separated participants receiving benefits	2013-01-01	525
Number of other retired or separated participants entitled to future benefits	2013-01-01	2,949
Total of all active and inactive participants	2013-01-01	12,217
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2013-01-01	89
Total participants	2013-01-01	12,306
Number of participants with account balances	2013-01-01	12,138
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2013-01-01	12
2012: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2012 401k membership
Total participants, beginning-of-year	2012-01-01	12,233
Total number of active participants reported on line 7a of the Form 5500	2012-01-01	10,002
Number of retired or separated participants receiving benefits	2012-01-01	479
Number of other retired or separated participants entitled to future benefits	2012-01-01	1,533
Total of all active and inactive participants	2012-01-01	12,014
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2012-01-01	94
Total participants	2012-01-01	12,108
Number of participants with account balances	2012-01-01	11,931
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2012-01-01	29
2011: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2011 401k membership
Total participants, beginning-of-year	2011-01-01	12,185
Total number of active participants reported on line 7a of the Form 5500	2011-01-01	10,149
Number of retired or separated participants receiving benefits	2011-01-01	483
Number of other retired or separated participants entitled to future benefits	2011-01-01	1,507
Total of all active and inactive participants	2011-01-01	12,139
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2011-01-01	94
Total participants	2011-01-01	12,233
Number of participants with account balances	2011-01-01	12,062
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2011-01-01	75
2009: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2009 401k membership
Total participants, beginning-of-year	2009-01-01	12,254
Total number of active participants reported on line 7a of the Form 5500	2009-01-01	10,704
Number of retired or separated participants receiving benefits	2009-01-01	621
Number of other retired or separated participants entitled to future benefits	2009-01-01	1,864
Total of all active and inactive participants	2009-01-01	13,189
Number of deceased participants whose beneficiaries are receiving or are entitled to receive benefits	2009-01-01	42
Total participants	2009-01-01	13,231
Number of participants with account balances	2009-01-01	12,641
Participants that terminated employment during the plan year with accrued benefits that were less than 100% vested	2009-01-01	24

Financial Data on NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II

Measure	Date	Value
2022 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2022 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2022-12-31	$-43,015,886
Total unrealized appreciation/depreciation of assets	2022-12-31	$-43,015,886
Total transfer of assets from this plan	2022-12-31	$3,370,067
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2022-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2022-12-31	$0
Total income from all sources (including contributions)	2022-12-31	$-544,645,269
Total loss/gain on sale of assets	2022-12-31	$-2,509,419
Total of all expenses incurred	2022-12-31	$550,909,401
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2022-12-31	$549,464,499
Expenses. Certain deemed distributions of participant loans	2022-12-31	$170,149
Value of total corrective distributions	2022-12-31	$58,684
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2022-12-31	$349,623,793
Value of total assets at end of year	2022-12-31	$5,209,131,336
Value of total assets at beginning of year	2022-12-31	$6,308,056,073
Total of administrative expenses incurred including professional, contract, advisory and management fees	2022-12-31	$1,216,069
Total interest from all sources	2022-12-31	$13,115,585
Total dividends received (eg from common stock, registered investment company shares)	2022-12-31	$15,503,700
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2022-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2022-12-31	$3,852,544
Administrative expenses professional fees incurred	2022-12-31	$72,679
Was this plan covered by a fidelity bond	2022-12-31	Yes
Value of fidelity bond cover	2022-12-31	$35,000,000
If this is an individual account plan, was there a blackout period	2022-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2022-12-31	No
Contributions received from participants	2022-12-31	$228,096,815
Participant contributions at end of year	2022-12-31	$77,359,641
Participant contributions at beginning of year	2022-12-31	$80,355,598
Assets. Other investments not covered elsewhere at end of year	2022-12-31	$25,485,449
Assets. Other investments not covered elsewhere at beginning of year	2022-12-31	$31,227,595
Income. Received or receivable in cash from other sources (including rollovers)	2022-12-31	$19,202,293
Value of other receiveables (less allowance for doubtful accounts) at end of year	2022-12-31	$3,805,157
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2022-12-31	$4,603,274
Other income not declared elsewhere	2022-12-31	$46,459
Administrative expenses (other) incurred	2022-12-31	$146,159
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2022-12-31	No
Value of net income/loss	2022-12-31	$-1,095,554,670
Value of net assets at end of year (total assets less liabilities)	2022-12-31	$5,209,131,336
Value of net assets at beginning of year (total assets less liabilities)	2022-12-31	$6,308,056,073
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2022-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2022-12-31	No
Were any leases to which the plan was party in default or uncollectible	2022-12-31	No
Investment advisory and management fees	2022-12-31	$164,704
Value of interest in registered invesment companies (eg mutual funds) at end of year	2022-12-31	$85,979,653
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2022-12-31	$113,336,416
Interest on participant loans	2022-12-31	$2,955,026
Interest earned on other investments	2022-12-31	$10,160,559
Value of interest in common/collective trusts at end of year	2022-12-31	$4,791,584,054
Value of interest in common/collective trusts at beginning of year	2022-12-31	$5,791,812,879
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2022-12-31	$-26,187,530
Net investment gain or loss from common/collective trusts	2022-12-31	$-851,221,971
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2022-12-31	No
Was there a failure to transmit to the plan any participant contributions	2022-12-31	No
Has the plan failed to provide any benefit when due under the plan	2022-12-31	No
Contributions received in cash from employer	2022-12-31	$102,324,685
Employer contributions (assets) at end of year	2022-12-31	$3,182,616
Employer contributions (assets) at beginning of year	2022-12-31	$2,623,766
Income. Dividends from common stock	2022-12-31	$11,651,156
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2022-12-31	$549,464,499
Contract administrator fees	2022-12-31	$832,527
Assets. Corporate common stocks other than exployer securities at end of year	2022-12-31	$221,734,766
Assets. Corporate common stocks other than exployer securities at beginning of year	2022-12-31	$284,096,545
Did the plan have assets held for investment	2022-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2022-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2022-12-31	No
Aggregate proceeds on sale of assets	2022-12-31	$44,161,038
Aggregate carrying amount (costs) on sale of assets	2022-12-31	$46,670,457
Opinion of an independent qualified public accountant for this plan	2022-12-31	Unqualified
Accountancy firm name	2022-12-31	DELOITTE & TOUCHE LLP
Accountancy firm EIN	2022-12-31	133891517
2021 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2021 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2021-12-31	$26,497,180
Total unrealized appreciation/depreciation of assets	2021-12-31	$26,497,180
Total transfer of assets to this plan	2021-12-31	$3,263,048,444
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2021-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2021-12-31	$0
Total income from all sources (including contributions)	2021-12-31	$508,273,367
Total loss/gain on sale of assets	2021-12-31	$1,721,015
Total of all expenses incurred	2021-12-31	$245,709,535
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2021-12-31	$244,696,582
Expenses. Certain deemed distributions of participant loans	2021-12-31	$210,022
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2021-12-31	$174,397,537
Value of total assets at end of year	2021-12-31	$6,308,056,073
Value of total assets at beginning of year	2021-12-31	$2,782,443,797
Total of administrative expenses incurred including professional, contract, advisory and management fees	2021-12-31	$802,931
Total interest from all sources	2021-12-31	$11,298,242
Total dividends received (eg from common stock, registered investment company shares)	2021-12-31	$8,345,710
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2021-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2021-12-31	$1,068,028
Administrative expenses professional fees incurred	2021-12-31	$33,873
Was this plan covered by a fidelity bond	2021-12-31	Yes
Value of fidelity bond cover	2021-12-31	$35,000,000
If this is an individual account plan, was there a blackout period	2021-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2021-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2021-12-31	No
Contributions received from participants	2021-12-31	$126,436,425
Participant contributions at end of year	2021-12-31	$80,355,598
Participant contributions at beginning of year	2021-12-31	$56,167,975
Assets. Other investments not covered elsewhere at end of year	2021-12-31	$31,227,595
Assets. Other investments not covered elsewhere at beginning of year	2021-12-31	$7,412,603
Income. Received or receivable in cash from other sources (including rollovers)	2021-12-31	$8,046,327
Value of other receiveables (less allowance for doubtful accounts) at end of year	2021-12-31	$4,603,274
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2021-12-31	$2,602,808
Administrative expenses (other) incurred	2021-12-31	$102,615
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2021-12-31	No
Value of net income/loss	2021-12-31	$262,563,832
Value of net assets at end of year (total assets less liabilities)	2021-12-31	$6,308,056,073
Value of net assets at beginning of year (total assets less liabilities)	2021-12-31	$2,782,443,797
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2021-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2021-12-31	No
Were any leases to which the plan was party in default or uncollectible	2021-12-31	No
Investment advisory and management fees	2021-12-31	$75,620
Value of interest in registered invesment companies (eg mutual funds) at end of year	2021-12-31	$113,336,416
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2021-12-31	$48,781,308
Interest on participant loans	2021-12-31	$2,222,225
Interest earned on other investments	2021-12-31	$9,076,017
Value of interest in master investment trust accounts at end of year	2021-12-31	$0
Value of interest in master investment trust accounts at beginning of year	2021-12-31	$367,280,626
Value of interest in common/collective trusts at end of year	2021-12-31	$5,791,812,879
Value of interest in common/collective trusts at beginning of year	2021-12-31	$2,163,959,134
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2021-12-31	$-458,334
Net investment gain or loss from common/collective trusts	2021-12-31	$281,390,773
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2021-12-31	No
Was there a failure to transmit to the plan any participant contributions	2021-12-31	No
Has the plan failed to provide any benefit when due under the plan	2021-12-31	No
Contributions received in cash from employer	2021-12-31	$39,914,785
Employer contributions (assets) at end of year	2021-12-31	$2,623,766
Employer contributions (assets) at beginning of year	2021-12-31	$1,604,604
Income. Dividends from common stock	2021-12-31	$7,277,682
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2021-12-31	$244,696,582
Contract administrator fees	2021-12-31	$590,823
Assets. Corporate common stocks other than exployer securities at end of year	2021-12-31	$284,096,545
Assets. Corporate common stocks other than exployer securities at beginning of year	2021-12-31	$134,634,739
Did the plan have assets held for investment	2021-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2021-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2021-12-31	No
Aggregate proceeds on sale of assets	2021-12-31	$27,974,333
Aggregate carrying amount (costs) on sale of assets	2021-12-31	$26,253,318
Opinion of an independent qualified public accountant for this plan	2021-12-31	Unqualified
Accountancy firm name	2021-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2021-12-31	410746749
2020 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2020 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2020-12-31	$-8,835,486
Total unrealized appreciation/depreciation of assets	2020-12-31	$-8,835,486
Total transfer of assets to this plan	2020-12-31	$710,432
Total transfer of assets from this plan	2020-12-31	$9,304,578
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2020-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2020-12-31	$0
Total income from all sources (including contributions)	2020-12-31	$456,739,993
Total loss/gain on sale of assets	2020-12-31	$0
Total of all expenses incurred	2020-12-31	$200,544,409
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2020-12-31	$199,462,188
Expenses. Certain deemed distributions of participant loans	2020-12-31	$183,410
Value of total corrective distributions	2020-12-31	$743
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2020-12-31	$162,092,635
Value of total assets at end of year	2020-12-31	$2,782,443,797
Value of total assets at beginning of year	2020-12-31	$2,534,842,359
Total of administrative expenses incurred including professional, contract, advisory and management fees	2020-12-31	$898,068
Total interest from all sources	2020-12-31	$2,609,473
Total dividends received (eg from common stock, registered investment company shares)	2020-12-31	$10,474,152
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2020-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2020-12-31	$2,855,190
Administrative expenses professional fees incurred	2020-12-31	$36,232
Was this plan covered by a fidelity bond	2020-12-31	Yes
Value of fidelity bond cover	2020-12-31	$35,000,000
If this is an individual account plan, was there a blackout period	2020-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2020-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2020-12-31	No
Contributions received from participants	2020-12-31	$119,278,354
Participant contributions at end of year	2020-12-31	$56,167,975
Participant contributions at beginning of year	2020-12-31	$57,913,495
Assets. Other investments not covered elsewhere at end of year	2020-12-31	$7,412,603
Assets. Other investments not covered elsewhere at beginning of year	2020-12-31	$3,262,176
Income. Received or receivable in cash from other sources (including rollovers)	2020-12-31	$6,463,628
Value of other receiveables (less allowance for doubtful accounts) at end of year	2020-12-31	$2,602,808
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2020-12-31	$2,456,015
Administrative expenses (other) incurred	2020-12-31	$94,000
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2020-12-31	No
Value of net income/loss	2020-12-31	$256,195,584
Value of net assets at end of year (total assets less liabilities)	2020-12-31	$2,782,443,797
Value of net assets at beginning of year (total assets less liabilities)	2020-12-31	$2,534,842,359
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2020-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2020-12-31	No
Were any leases to which the plan was party in default or uncollectible	2020-12-31	No
Investment advisory and management fees	2020-12-31	$68,168
Value of interest in registered invesment companies (eg mutual funds) at end of year	2020-12-31	$48,781,308
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2020-12-31	$43,604,247
Interest on participant loans	2020-12-31	$2,605,554
Interest earned on other investments	2020-12-31	$3,919
Value of interest in master investment trust accounts at end of year	2020-12-31	$367,280,626
Value of interest in master investment trust accounts at beginning of year	2020-12-31	$304,829,104
Value of interest in common/collective trusts at end of year	2020-12-31	$2,163,959,134
Value of interest in common/collective trusts at beginning of year	2020-12-31	$1,961,084,253
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2020-12-31	$2,021,507
Net investment gain or loss from common/collective trusts	2020-12-31	$280,403,440
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2020-12-31	No
Was there a failure to transmit to the plan any participant contributions	2020-12-31	No
Has the plan failed to provide any benefit when due under the plan	2020-12-31	No
Contributions received in cash from employer	2020-12-31	$36,350,653
Employer contributions (assets) at end of year	2020-12-31	$1,604,604
Employer contributions (assets) at beginning of year	2020-12-31	$1,349,344
Income. Dividends from common stock	2020-12-31	$7,618,962
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2020-12-31	$199,462,188
Contract administrator fees	2020-12-31	$699,668
Assets. Corporate common stocks other than exployer securities at end of year	2020-12-31	$134,634,739
Assets. Corporate common stocks other than exployer securities at beginning of year	2020-12-31	$160,343,725
Did the plan have assets held for investment	2020-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2020-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2020-12-31	No
Opinion of an independent qualified public accountant for this plan	2020-12-31	Unqualified
Accountancy firm name	2020-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2020-12-31	410746749
2019 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2019 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2019-12-31	$39,192,582
Total unrealized appreciation/depreciation of assets	2019-12-31	$39,192,582
Total transfer of assets to this plan	2019-12-31	$1,726,257
Total transfer of assets from this plan	2019-12-31	$5,163,601
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2019-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2019-12-31	$0
Total income from all sources (including contributions)	2019-12-31	$566,219,653
Total loss/gain on sale of assets	2019-12-31	$0
Total of all expenses incurred	2019-12-31	$181,381,233
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2019-12-31	$180,502,387
Expenses. Certain deemed distributions of participant loans	2019-12-31	$111,602
Value of total corrective distributions	2019-12-31	$948
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2019-12-31	$153,367,629
Value of total assets at end of year	2019-12-31	$2,534,842,359
Value of total assets at beginning of year	2019-12-31	$2,153,441,283
Total of administrative expenses incurred including professional, contract, advisory and management fees	2019-12-31	$766,296
Total interest from all sources	2019-12-31	$2,508,475
Total dividends received (eg from common stock, registered investment company shares)	2019-12-31	$11,163,171
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2019-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2019-12-31	$3,327,311
Administrative expenses professional fees incurred	2019-12-31	$29,864
Was this plan covered by a fidelity bond	2019-12-31	Yes
Value of fidelity bond cover	2019-12-31	$15,000,000
If this is an individual account plan, was there a blackout period	2019-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2019-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2019-12-31	No
Contributions received from participants	2019-12-31	$112,102,515
Participant contributions at end of year	2019-12-31	$57,913,495
Participant contributions at beginning of year	2019-12-31	$55,977,365
Assets. Other investments not covered elsewhere at end of year	2019-12-31	$3,262,176
Assets. Other investments not covered elsewhere at beginning of year	2019-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2019-12-31	$5,999,646
Value of other receiveables (less allowance for doubtful accounts) at end of year	2019-12-31	$2,456,015
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2019-12-31	$2,886,008
Administrative expenses (other) incurred	2019-12-31	$64,132
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2019-12-31	No
Value of net income/loss	2019-12-31	$384,838,420
Value of net assets at end of year (total assets less liabilities)	2019-12-31	$2,534,842,359
Value of net assets at beginning of year (total assets less liabilities)	2019-12-31	$2,153,441,283
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2019-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2019-12-31	No
Were any leases to which the plan was party in default or uncollectible	2019-12-31	No
Investment advisory and management fees	2019-12-31	$74,522
Value of interest in registered invesment companies (eg mutual funds) at end of year	2019-12-31	$43,604,247
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2019-12-31	$285,427,111
Interest on participant loans	2019-12-31	$2,508,345
Interest earned on other investments	2019-12-31	$130
Value of interest in master investment trust accounts at end of year	2019-12-31	$304,829,104
Value of interest in master investment trust accounts at beginning of year	2019-12-31	$312,393,549
Value of interest in common/collective trusts at end of year	2019-12-31	$1,961,084,253
Value of interest in common/collective trusts at beginning of year	2019-12-31	$1,366,664,108
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2019-12-31	$37,743,174
Net investment gain or loss from common/collective trusts	2019-12-31	$314,416,788
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2019-12-31	No
Was there a failure to transmit to the plan any participant contributions	2019-12-31	No
Has the plan failed to provide any benefit when due under the plan	2019-12-31	No
Contributions received in cash from employer	2019-12-31	$35,265,468
Employer contributions (assets) at end of year	2019-12-31	$1,349,344
Employer contributions (assets) at beginning of year	2019-12-31	$0
Income. Dividends from common stock	2019-12-31	$7,835,860
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2019-12-31	$180,502,387
Contract administrator fees	2019-12-31	$597,778
Assets. Corporate common stocks other than exployer securities at end of year	2019-12-31	$160,343,725
Assets. Corporate common stocks other than exployer securities at beginning of year	2019-12-31	$130,093,142
Did the plan have assets held for investment	2019-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2019-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2019-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2019-12-31	No
Opinion of an independent qualified public accountant for this plan	2019-12-31	Unqualified
Accountancy firm name	2019-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2019-12-31	410746749
2018 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2018 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2018-12-31	$-29,173,845
Total unrealized appreciation/depreciation of assets	2018-12-31	$-29,173,845
Total transfer of assets from this plan	2018-12-31	$9,829,047
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2018-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2018-12-31	$0
Total income from all sources (including contributions)	2018-12-31	$37,080,346
Total loss/gain on sale of assets	2018-12-31	$0
Total of all expenses incurred	2018-12-31	$166,793,378
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2018-12-31	$165,887,831
Expenses. Certain deemed distributions of participant loans	2018-12-31	$213,079
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2018-12-31	$149,943,773
Value of total assets at end of year	2018-12-31	$2,153,441,283
Value of total assets at beginning of year	2018-12-31	$2,292,983,362
Total of administrative expenses incurred including professional, contract, advisory and management fees	2018-12-31	$692,468
Total interest from all sources	2018-12-31	$2,414,068
Total dividends received (eg from common stock, registered investment company shares)	2018-12-31	$15,362,295
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2018-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2018-12-31	$6,967,641
Administrative expenses professional fees incurred	2018-12-31	$22,564
Was this plan covered by a fidelity bond	2018-12-31	Yes
Value of fidelity bond cover	2018-12-31	$25,000,000
If this is an individual account plan, was there a blackout period	2018-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2018-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2018-12-31	No
Contributions received from participants	2018-12-31	$101,920,643
Participant contributions at end of year	2018-12-31	$55,977,365
Participant contributions at beginning of year	2018-12-31	$54,206,824
Income. Received or receivable in cash from other sources (including rollovers)	2018-12-31	$17,578,515
Value of other receiveables (less allowance for doubtful accounts) at end of year	2018-12-31	$2,886,008
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2018-12-31	$2,753,675
Administrative expenses (other) incurred	2018-12-31	$24,953
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2018-12-31	No
Value of net income/loss	2018-12-31	$-129,713,032
Value of net assets at end of year (total assets less liabilities)	2018-12-31	$2,153,441,283
Value of net assets at beginning of year (total assets less liabilities)	2018-12-31	$2,292,983,362
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2018-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2018-12-31	No
Were any leases to which the plan was party in default or uncollectible	2018-12-31	No
Investment advisory and management fees	2018-12-31	$55,377
Value of interest in registered invesment companies (eg mutual funds) at end of year	2018-12-31	$285,427,111
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2018-12-31	$308,760,783
Interest on participant loans	2018-12-31	$2,040,444
Interest earned on other investments	2018-12-31	$373,624
Value of interest in master investment trust accounts at end of year	2018-12-31	$312,393,549
Value of interest in master investment trust accounts at beginning of year	2018-12-31	$308,027,391
Value of interest in common/collective trusts at end of year	2018-12-31	$1,366,664,108
Value of interest in common/collective trusts at beginning of year	2018-12-31	$1,460,934,971
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2018-12-31	$-26,257,739
Net investment gain or loss from common/collective trusts	2018-12-31	$-82,179,400
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2018-12-31	No
Was there a failure to transmit to the plan any participant contributions	2018-12-31	No
Has the plan failed to provide any benefit when due under the plan	2018-12-31	No
Contributions received in cash from employer	2018-12-31	$30,444,615
Income. Dividends from common stock	2018-12-31	$8,394,654
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2018-12-31	$165,887,831
Contract administrator fees	2018-12-31	$589,574
Assets. Corporate common stocks other than exployer securities at end of year	2018-12-31	$130,093,142
Assets. Corporate common stocks other than exployer securities at beginning of year	2018-12-31	$158,299,718
Did the plan have assets held for investment	2018-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2018-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2018-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2018-12-31	No
Opinion of an independent qualified public accountant for this plan	2018-12-31	Unqualified
Accountancy firm name	2018-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2018-12-31	410746749
2017 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2017 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2017-12-31	$-13,919,213
Total unrealized appreciation/depreciation of assets	2017-12-31	$-13,919,213
Total transfer of assets from this plan	2017-12-31	$9,268,654
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2017-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2017-12-31	$0
Total income from all sources (including contributions)	2017-12-31	$402,980,601
Total loss/gain on sale of assets	2017-12-31	$0
Total of all expenses incurred	2017-12-31	$153,119,033
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2017-12-31	$152,307,834
Expenses. Certain deemed distributions of participant loans	2017-12-31	$3,121
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2017-12-31	$132,945,080
Value of total assets at end of year	2017-12-31	$2,292,983,362
Value of total assets at beginning of year	2017-12-31	$2,052,390,448
Total of administrative expenses incurred including professional, contract, advisory and management fees	2017-12-31	$808,078
Total interest from all sources	2017-12-31	$2,575,751
Total dividends received (eg from common stock, registered investment company shares)	2017-12-31	$28,548,638
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2017-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2017-12-31	$5,770,912
Administrative expenses professional fees incurred	2017-12-31	$33,569
Was this plan covered by a fidelity bond	2017-12-31	Yes
Value of fidelity bond cover	2017-12-31	$1,000,000
If this is an individual account plan, was there a blackout period	2017-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2017-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2017-12-31	No
Contributions received from participants	2017-12-31	$99,538,829
Participant contributions at end of year	2017-12-31	$54,206,824
Participant contributions at beginning of year	2017-12-31	$53,354,999
Income. Received or receivable in cash from other sources (including rollovers)	2017-12-31	$6,097,387
Value of other receiveables (less allowance for doubtful accounts) at end of year	2017-12-31	$2,753,675
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2017-12-31	$2,513,587
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2017-12-31	No
Value of net income/loss	2017-12-31	$249,861,568
Value of net assets at end of year (total assets less liabilities)	2017-12-31	$2,292,983,362
Value of net assets at beginning of year (total assets less liabilities)	2017-12-31	$2,052,390,448
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2017-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2017-12-31	No
Were any leases to which the plan was party in default or uncollectible	2017-12-31	No
Investment advisory and management fees	2017-12-31	$54,427
Value of interest in registered invesment companies (eg mutual funds) at end of year	2017-12-31	$308,760,783
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2017-12-31	$256,753,426
Interest on participant loans	2017-12-31	$1,863,146
Interest earned on other investments	2017-12-31	$712,605
Value of interest in master investment trust accounts at end of year	2017-12-31	$308,027,391
Value of interest in master investment trust accounts at beginning of year	2017-12-31	$338,596,331
Value of interest in common/collective trusts at end of year	2017-12-31	$1,460,934,971
Value of interest in common/collective trusts at beginning of year	2017-12-31	$1,242,077,548
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2017-12-31	$40,369,716
Net investment gain or loss from common/collective trusts	2017-12-31	$206,277,107
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2017-12-31	No
Was there a failure to transmit to the plan any participant contributions	2017-12-31	No
Has the plan failed to provide any benefit when due under the plan	2017-12-31	No
Contributions received in cash from employer	2017-12-31	$27,308,864
Income. Dividends from common stock	2017-12-31	$22,777,726
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2017-12-31	$152,307,834
Contract administrator fees	2017-12-31	$720,082
Assets. Corporate common stocks other than exployer securities at end of year	2017-12-31	$158,299,718
Assets. Corporate common stocks other than exployer securities at beginning of year	2017-12-31	$159,094,557
Did the plan have assets held for investment	2017-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2017-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2017-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2017-12-31	No
Opinion of an independent qualified public accountant for this plan	2017-12-31	Unqualified
Accountancy firm name	2017-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2017-12-31	410746749
2016 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2016 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2016-12-31	$4,471,491
Total unrealized appreciation/depreciation of assets	2016-12-31	$4,471,491
Total transfer of assets from this plan	2016-12-31	$8,864,695
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2016-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2016-12-31	$0
Total income from all sources (including contributions)	2016-12-31	$217,205,889
Total loss/gain on sale of assets	2016-12-31	$0
Total of all expenses incurred	2016-12-31	$120,559,522
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2016-12-31	$119,535,485
Value of total corrective distributions	2016-12-31	$158,102
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2016-12-31	$119,292,557
Value of total assets at end of year	2016-12-31	$2,052,390,448
Value of total assets at beginning of year	2016-12-31	$1,964,608,776
Total of administrative expenses incurred including professional, contract, advisory and management fees	2016-12-31	$865,935
Total interest from all sources	2016-12-31	$2,324,896
Total dividends received (eg from common stock, registered investment company shares)	2016-12-31	$13,493,700
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2016-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2016-12-31	$13,493,323
Administrative expenses professional fees incurred	2016-12-31	$54,600
Was this plan covered by a fidelity bond	2016-12-31	Yes
Value of fidelity bond cover	2016-12-31	$25,000,000
If this is an individual account plan, was there a blackout period	2016-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2016-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2016-12-31	No
Contributions received from participants	2016-12-31	$91,880,582
Participant contributions at end of year	2016-12-31	$53,354,999
Participant contributions at beginning of year	2016-12-31	$53,027,463
Income. Received or receivable in cash from other sources (including rollovers)	2016-12-31	$4,623,464
Value of other receiveables (less allowance for doubtful accounts) at end of year	2016-12-31	$2,513,587
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2016-12-31	$2,842,958
Other income not declared elsewhere	2016-12-31	$-21,367,606
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2016-12-31	No
Value of net income/loss	2016-12-31	$96,646,367
Value of net assets at end of year (total assets less liabilities)	2016-12-31	$2,052,390,448
Value of net assets at beginning of year (total assets less liabilities)	2016-12-31	$1,964,608,776
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2016-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2016-12-31	No
Were any leases to which the plan was party in default or uncollectible	2016-12-31	No
Investment advisory and management fees	2016-12-31	$90,629
Value of interest in registered invesment companies (eg mutual funds) at end of year	2016-12-31	$256,753,426
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2016-12-31	$235,983,920
Interest on participant loans	2016-12-31	$1,749,198
Interest earned on other investments	2016-12-31	$575,698
Value of interest in master investment trust accounts at end of year	2016-12-31	$338,596,331
Value of interest in master investment trust accounts at beginning of year	2016-12-31	$334,019,375
Value of interest in common/collective trusts at end of year	2016-12-31	$1,242,077,548
Value of interest in common/collective trusts at beginning of year	2016-12-31	$1,164,134,183
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2016-12-31	$5,204,190
Net investment gain or loss from common/collective trusts	2016-12-31	$93,786,661
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2016-12-31	No
Was there a failure to transmit to the plan any participant contributions	2016-12-31	No
Has the plan failed to provide any benefit when due under the plan	2016-12-31	No
Contributions received in cash from employer	2016-12-31	$22,788,511
Income. Dividends from common stock	2016-12-31	$377
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2016-12-31	$119,535,485
Contract administrator fees	2016-12-31	$720,706
Assets. Corporate common stocks other than exployer securities at end of year	2016-12-31	$159,094,557
Assets. Corporate common stocks other than exployer securities at beginning of year	2016-12-31	$174,600,877
Did the plan have assets held for investment	2016-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2016-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2016-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2016-12-31	No
Opinion of an independent qualified public accountant for this plan	2016-12-31	Unqualified
Accountancy firm name	2016-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2016-12-31	410746749
2015 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2015 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2015-12-31	$-2,967,466
Total unrealized appreciation/depreciation of assets	2015-12-31	$-2,967,466
Total transfer of assets from this plan	2015-12-31	$799,104
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2015-12-31	$0
Total income from all sources (including contributions)	2015-12-31	$113,846,698
Total loss/gain on sale of assets	2015-12-31	$0
Total of all expenses incurred	2015-12-31	$134,866,830
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2015-12-31	$133,758,167
Value of total corrective distributions	2015-12-31	$370,661
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2015-12-31	$117,098,147
Value of total assets at end of year	2015-12-31	$1,964,608,776
Value of total assets at beginning of year	2015-12-31	$1,986,428,012
Total of administrative expenses incurred including professional, contract, advisory and management fees	2015-12-31	$738,002
Total interest from all sources	2015-12-31	$2,303,227
Total dividends received (eg from common stock, registered investment company shares)	2015-12-31	$15,081,142
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2015-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2015-12-31	$6,695,039
Administrative expenses professional fees incurred	2015-12-31	$29,211
Was this plan covered by a fidelity bond	2015-12-31	Yes
Value of fidelity bond cover	2015-12-31	$25,000,000
If this is an individual account plan, was there a blackout period	2015-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2015-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2015-12-31	No
Contributions received from participants	2015-12-31	$88,801,194
Participant contributions at end of year	2015-12-31	$53,027,463
Participant contributions at beginning of year	2015-12-31	$51,952,412
Income. Received or receivable in cash from other sources (including rollovers)	2015-12-31	$8,512,410
Value of other receiveables (less allowance for doubtful accounts) at end of year	2015-12-31	$2,842,958
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2015-12-31	$2,962,105
Other income not declared elsewhere	2015-12-31	$-4,225,108
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-12-31	No
Value of net income/loss	2015-12-31	$-21,020,132
Value of net assets at end of year (total assets less liabilities)	2015-12-31	$1,964,608,776
Value of net assets at beginning of year (total assets less liabilities)	2015-12-31	$1,986,428,012
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2015-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2015-12-31	No
Were any leases to which the plan was party in default or uncollectible	2015-12-31	No
Investment advisory and management fees	2015-12-31	$16,096
Value of interest in registered invesment companies (eg mutual funds) at end of year	2015-12-31	$235,983,920
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2015-12-31	$230,210,820
Interest on participant loans	2015-12-31	$1,700,254
Interest earned on other investments	2015-12-31	$602,973
Value of interest in master investment trust accounts at end of year	2015-12-31	$334,019,375
Value of interest in master investment trust accounts at beginning of year	2015-12-31	$345,688,471
Value of interest in common/collective trusts at end of year	2015-12-31	$1,164,134,183
Value of interest in common/collective trusts at beginning of year	2015-12-31	$1,174,870,620
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2015-12-31	$-8,856,537
Net investment gain or loss from common/collective trusts	2015-12-31	$-4,586,707
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2015-12-31	No
Was there a failure to transmit to the plan any participant contributions	2015-12-31	No
Has the plan failed to provide any benefit when due under the plan	2015-12-31	No
Contributions received in cash from employer	2015-12-31	$19,784,543
Income. Dividends from common stock	2015-12-31	$8,386,103
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2015-12-31	$133,758,167
Contract administrator fees	2015-12-31	$692,695
Assets. Corporate common stocks other than exployer securities at end of year	2015-12-31	$174,600,877
Assets. Corporate common stocks other than exployer securities at beginning of year	2015-12-31	$180,743,584
Did the plan have assets held for investment	2015-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2015-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2015-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2015-12-31	No
Opinion of an independent qualified public accountant for this plan	2015-12-31	Unqualified
Accountancy firm name	2015-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2015-12-31	410746749
2014 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2014 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2014-12-31	$104,702,230
Total unrealized appreciation/depreciation of assets	2014-12-31	$104,702,230
Total transfer of assets to this plan	2014-12-31	$936,565
Total transfer of assets from this plan	2014-12-31	$6,536,365
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2014-12-31	$0
Total income from all sources (including contributions)	2014-12-31	$233,535,697
Total loss/gain on sale of assets	2014-12-31	$0
Total of all expenses incurred	2014-12-31	$302,290,462
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2014-12-31	$300,227,087
Expenses. Certain deemed distributions of participant loans	2014-12-31	$1,333,239
Value of total corrective distributions	2014-12-31	$475
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2014-12-31	$109,010,926
Value of total assets at end of year	2014-12-31	$1,986,428,012
Value of total assets at beginning of year	2014-12-31	$2,060,782,577
Total of administrative expenses incurred including professional, contract, advisory and management fees	2014-12-31	$729,661
Total interest from all sources	2014-12-31	$6,795,095
Total dividends received (eg from common stock, registered investment company shares)	2014-12-31	$14,181,806
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2014-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2014-12-31	$5,559,387
Administrative expenses professional fees incurred	2014-12-31	$36,065
Was this plan covered by a fidelity bond	2014-12-31	Yes
Value of fidelity bond cover	2014-12-31	$25,000,000
If this is an individual account plan, was there a blackout period	2014-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2014-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2014-12-31	No
Contributions received from participants	2014-12-31	$85,292,651
Participant contributions at end of year	2014-12-31	$51,952,412
Participant contributions at beginning of year	2014-12-31	$58,019,445
Participant contributions at end of year	2014-12-31	$0
Participant contributions at beginning of year	2014-12-31	$0
Income. Received or receivable in cash from other sources (including rollovers)	2014-12-31	$6,069,759
Value of other receiveables (less allowance for doubtful accounts) at end of year	2014-12-31	$2,962,105
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2014-12-31	$2,955,455
Other income not declared elsewhere	2014-12-31	$3,235,779
Administrative expenses (other) incurred	2014-12-31	$0
Total non interest bearing cash at end of year	2014-12-31	$0
Total non interest bearing cash at beginning of year	2014-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2014-12-31	No
Value of net income/loss	2014-12-31	$-68,754,765
Value of net assets at end of year (total assets less liabilities)	2014-12-31	$1,986,428,012
Value of net assets at beginning of year (total assets less liabilities)	2014-12-31	$2,060,782,577
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2014-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2014-12-31	No
Were any leases to which the plan was party in default or uncollectible	2014-12-31	No
Investment advisory and management fees	2014-12-31	$8,710
Value of interest in registered invesment companies (eg mutual funds) at end of year	2014-12-31	$230,210,820
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2014-12-31	$228,817,210
Interest on participant loans	2014-12-31	$1,683,891
Interest earned on other investments	2014-12-31	$5,111,204
Value of interest in master investment trust accounts at end of year	2014-12-31	$345,688,471
Value of interest in master investment trust accounts at beginning of year	2014-12-31	$397,446,694
Value of interest in common/collective trusts at end of year	2014-12-31	$1,174,870,620
Value of interest in common/collective trusts at beginning of year	2014-12-31	$1,209,286,079
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2014-12-31	$-5,111,204
Net investment gain or loss from common/collective trusts	2014-12-31	$721,065
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2014-12-31	No
Was there a failure to transmit to the plan any participant contributions	2014-12-31	No
Has the plan failed to provide any benefit when due under the plan	2014-12-31	No
Contributions received in cash from employer	2014-12-31	$17,648,516
Employer contributions (assets) at end of year	2014-12-31	$0
Employer contributions (assets) at beginning of year	2014-12-31	$4,996
Income. Dividends from common stock	2014-12-31	$8,622,419
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2014-12-31	$300,227,087
Contract administrator fees	2014-12-31	$684,886
Assets. Corporate common stocks other than exployer securities at end of year	2014-12-31	$180,743,584
Assets. Corporate common stocks other than exployer securities at beginning of year	2014-12-31	$164,252,698
Did the plan have assets held for investment	2014-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2014-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2014-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2014-12-31	No
Opinion of an independent qualified public accountant for this plan	2014-12-31	Unqualified
Accountancy firm name	2014-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2014-12-31	410746749
2013 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2013 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2013-12-31	$245,471,734
Total unrealized appreciation/depreciation of assets	2013-12-31	$245,471,734
Total transfer of assets to this plan	2013-12-31	$663,173
Total transfer of assets from this plan	2013-12-31	$6,719,989
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2013-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2013-12-31	$0
Total income from all sources (including contributions)	2013-12-31	$372,928,813
Total loss/gain on sale of assets	2013-12-31	$0
Total of all expenses incurred	2013-12-31	$121,277,277
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2013-12-31	$120,932,367
Expenses. Certain deemed distributions of participant loans	2013-12-31	$57,758
Value of total corrective distributions	2013-12-31	$8,213
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2013-12-31	$121,195,003
Value of total assets at end of year	2013-12-31	$2,060,782,577
Value of total assets at beginning of year	2013-12-31	$1,815,187,857
Total of administrative expenses incurred including professional, contract, advisory and management fees	2013-12-31	$278,939
Total interest from all sources	2013-12-31	$8,244,486
Total dividends received (eg from common stock, registered investment company shares)	2013-12-31	$12,950,638
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2013-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2013-12-31	$4,933,952
Administrative expenses professional fees incurred	2013-12-31	$25,169
Was this plan covered by a fidelity bond	2013-12-31	Yes
Value of fidelity bond cover	2013-12-31	$25,000,000
If this is an individual account plan, was there a blackout period	2013-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2013-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2013-12-31	No
Contributions received from participants	2013-12-31	$94,438,880
Participant contributions at end of year	2013-12-31	$58,019,445
Participant contributions at beginning of year	2013-12-31	$56,762,927
Participant contributions at end of year	2013-12-31	$0
Participant contributions at beginning of year	2013-12-31	$389
Income. Received or receivable in cash from other sources (including rollovers)	2013-12-31	$10,786,849
Value of other receiveables (less allowance for doubtful accounts) at end of year	2013-12-31	$2,955,455
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2013-12-31	$2,868,647
Other income not declared elsewhere	2013-12-31	$-9,128,630
Total non interest bearing cash at end of year	2013-12-31	$0
Total non interest bearing cash at beginning of year	2013-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2013-12-31	No
Value of net income/loss	2013-12-31	$251,651,536
Value of net assets at end of year (total assets less liabilities)	2013-12-31	$2,060,782,577
Value of net assets at beginning of year (total assets less liabilities)	2013-12-31	$1,815,187,857
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2013-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2013-12-31	No
Were any leases to which the plan was party in default or uncollectible	2013-12-31	No
Investment advisory and management fees	2013-12-31	$25,599
Value of interest in registered invesment companies (eg mutual funds) at end of year	2013-12-31	$228,817,210
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2013-12-31	$1,161,115,774
Interest on participant loans	2013-12-31	$1,854,040
Interest earned on other investments	2013-12-31	$6,390,446
Value of interest in master investment trust accounts at end of year	2013-12-31	$397,446,694
Value of interest in master investment trust accounts at beginning of year	2013-12-31	$402,751,041
Value of interest in common/collective trusts at end of year	2013-12-31	$1,209,286,079
Value of interest in common/collective trusts at beginning of year	2013-12-31	$48,856,302
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2013-12-31	$-6,390,446
Net investment gain or loss from common/collective trusts	2013-12-31	$586,028
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2013-12-31	No
Was there a failure to transmit to the plan any participant contributions	2013-12-31	No
Has the plan failed to provide any benefit when due under the plan	2013-12-31	No
Contributions received in cash from employer	2013-12-31	$15,969,274
Employer contributions (assets) at end of year	2013-12-31	$4,996
Employer contributions (assets) at beginning of year	2013-12-31	$60
Income. Dividends from common stock	2013-12-31	$8,016,686
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2013-12-31	$120,932,367
Contract administrator fees	2013-12-31	$228,171
Assets. Corporate common stocks other than exployer securities at end of year	2013-12-31	$164,252,698
Assets. Corporate common stocks other than exployer securities at beginning of year	2013-12-31	$142,832,717
Did the plan have assets held for investment	2013-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2013-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2013-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2013-12-31	No
Opinion of an independent qualified public accountant for this plan	2013-12-31	Unqualified
Accountancy firm name	2013-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2013-12-31	410746749
2012 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2012 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2012-12-31	$142,635,924
Total unrealized appreciation/depreciation of assets	2012-12-31	$142,635,924
Total transfer of assets from this plan	2012-12-31	$746,128
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2012-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2012-12-31	$0
Total income from all sources (including contributions)	2012-12-31	$296,651,762
Total loss/gain on sale of assets	2012-12-31	$0
Total of all expenses incurred	2012-12-31	$101,428,959
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2012-12-31	$101,372,108
Expenses. Certain deemed distributions of participant loans	2012-12-31	$11,741
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2012-12-31	$110,555,548
Value of total assets at end of year	2012-12-31	$1,815,187,857
Value of total assets at beginning of year	2012-12-31	$1,620,711,182
Total of administrative expenses incurred including professional, contract, advisory and management fees	2012-12-31	$45,110
Total interest from all sources	2012-12-31	$9,190,306
Total dividends received (eg from common stock, registered investment company shares)	2012-12-31	$35,837,019
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2012-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2012-12-31	$27,965,991
Was this plan covered by a fidelity bond	2012-12-31	Yes
Value of fidelity bond cover	2012-12-31	$25,000,000
If this is an individual account plan, was there a blackout period	2012-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2012-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2012-12-31	No
Contributions received from participants	2012-12-31	$89,635,591
Participant contributions at end of year	2012-12-31	$56,762,927
Participant contributions at beginning of year	2012-12-31	$56,233,527
Participant contributions at end of year	2012-12-31	$389
Participant contributions at beginning of year	2012-12-31	$1,227,622
Income. Received or receivable in cash from other sources (including rollovers)	2012-12-31	$5,452,938
Value of other receiveables (less allowance for doubtful accounts) at end of year	2012-12-31	$2,868,647
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2012-12-31	$2,644,842
Other income not declared elsewhere	2012-12-31	$4,934,469
Administrative expenses (other) incurred	2012-12-31	$6,197
Total non interest bearing cash at end of year	2012-12-31	$0
Total non interest bearing cash at beginning of year	2012-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2012-12-31	No
Value of net income/loss	2012-12-31	$195,222,803
Value of net assets at end of year (total assets less liabilities)	2012-12-31	$1,815,187,857
Value of net assets at beginning of year (total assets less liabilities)	2012-12-31	$1,620,711,182
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2012-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2012-12-31	No
Were any leases to which the plan was party in default or uncollectible	2012-12-31	No
Investment advisory and management fees	2012-12-31	$25,313
Value of interest in registered invesment companies (eg mutual funds) at end of year	2012-12-31	$1,161,115,774
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2012-12-31	$1,004,140,931
Interest on participant loans	2012-12-31	$2,004,861
Interest earned on other investments	2012-12-31	$7,185,445
Value of interest in master investment trust accounts at end of year	2012-12-31	$402,751,041
Value of interest in master investment trust accounts at beginning of year	2012-12-31	$387,578,131
Value of interest in common/collective trusts at end of year	2012-12-31	$48,856,302
Value of interest in common/collective trusts at beginning of year	2012-12-31	$51,122,421
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2012-12-31	$-7,185,445
Net investment gain or loss from common/collective trusts	2012-12-31	$683,941
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2012-12-31	No
Was there a failure to transmit to the plan any participant contributions	2012-12-31	Yes
Has the plan failed to provide any benefit when due under the plan	2012-12-31	No
Contributions received in cash from employer	2012-12-31	$15,467,019
Employer contributions (assets) at end of year	2012-12-31	$60
Employer contributions (assets) at beginning of year	2012-12-31	$567,894
Income. Dividends from common stock	2012-12-31	$7,871,028
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2012-12-31	$101,372,108
Contract administrator fees	2012-12-31	$13,600
Assets. Corporate common stocks other than exployer securities at end of year	2012-12-31	$142,832,717
Assets. Corporate common stocks other than exployer securities at beginning of year	2012-12-31	$117,195,814
Did the plan have assets held for investment	2012-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2012-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2012-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2012-12-31	No
Opinion of an independent qualified public accountant for this plan	2012-12-31	Unqualified
Accountancy firm name	2012-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2012-12-31	410746749
2011 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2011 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2011-12-31	$-13,937,598
Total unrealized appreciation/depreciation of assets	2011-12-31	$-13,937,598
Total transfer of assets to this plan	2011-12-31	$1,221,013
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2011-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2011-12-31	$0
Total income from all sources (including contributions)	2011-12-31	$133,200,981
Total loss/gain on sale of assets	2011-12-31	$0
Total of all expenses incurred	2011-12-31	$96,104,678
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2011-12-31	$96,070,243
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2011-12-31	$105,018,405
Value of total assets at end of year	2011-12-31	$1,620,711,182
Value of total assets at beginning of year	2011-12-31	$1,582,393,866
Total of administrative expenses incurred including professional, contract, advisory and management fees	2011-12-31	$34,435
Total interest from all sources	2011-12-31	$10,133,857
Total dividends received (eg from common stock, registered investment company shares)	2011-12-31	$31,785,819
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2011-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2011-12-31	$25,047,778
Was this plan covered by a fidelity bond	2011-12-31	Yes
Value of fidelity bond cover	2011-12-31	$15,000,000
If this is an individual account plan, was there a blackout period	2011-12-31	No
Total value of distributions paid in property other than in cash, annuity contracts, or publicly traded employer securities	2011-12-31	$0
Were there any nonexempt tranactions with any party-in-interest	2011-12-31	No
Contributions received from participants	2011-12-31	$85,415,251
Participant contributions at end of year	2011-12-31	$56,233,527
Participant contributions at beginning of year	2011-12-31	$55,202,221
Participant contributions at end of year	2011-12-31	$1,227,622
Participant contributions at beginning of year	2011-12-31	$1,202,720
Income. Received or receivable in cash from other sources (including rollovers)	2011-12-31	$5,078,179
Value of other receiveables (less allowance for doubtful accounts) at end of year	2011-12-31	$2,644,842
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2011-12-31	$2,354,801
Other income not declared elsewhere	2011-12-31	$7,808,784
Administrative expenses (other) incurred	2011-12-31	$34,435
Total non interest bearing cash at end of year	2011-12-31	$0
Total non interest bearing cash at beginning of year	2011-12-31	$0
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2011-12-31	No
Value of net income/loss	2011-12-31	$37,096,303
Value of net assets at end of year (total assets less liabilities)	2011-12-31	$1,620,711,182
Value of net assets at beginning of year (total assets less liabilities)	2011-12-31	$1,582,393,866
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2011-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2011-12-31	No
Were any leases to which the plan was party in default or uncollectible	2011-12-31	No
Value of interest in registered invesment companies (eg mutual funds) at end of year	2011-12-31	$1,004,140,931
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2011-12-31	$997,147,859
Interest on participant loans	2011-12-31	$2,235,529
Interest earned on other investments	2011-12-31	$7,898,328
Value of interest in master investment trust accounts at end of year	2011-12-31	$387,578,131
Value of interest in master investment trust accounts at beginning of year	2011-12-31	$369,153,666
Value of interest in common/collective trusts at end of year	2011-12-31	$51,122,421
Value of interest in common/collective trusts at beginning of year	2011-12-31	$55,194,527
Net investment gain or loss from common/collective trusts	2011-12-31	$-7,608,286
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2011-12-31	No
Was there a failure to transmit to the plan any participant contributions	2011-12-31	No
Has the plan failed to provide any benefit when due under the plan	2011-12-31	No
Contributions received in cash from employer	2011-12-31	$14,524,975
Employer contributions (assets) at end of year	2011-12-31	$567,894
Employer contributions (assets) at beginning of year	2011-12-31	$468,391
Income. Dividends from common stock	2011-12-31	$6,738,041
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2011-12-31	$96,070,243
Assets. Corporate common stocks other than exployer securities at end of year	2011-12-31	$117,195,814
Assets. Corporate common stocks other than exployer securities at beginning of year	2011-12-31	$101,669,681
Did the plan have assets held for investment	2011-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2011-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2011-12-31	No
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2011-12-31	No
Opinion of an independent qualified public accountant for this plan	2011-12-31	Unqualified
Accountancy firm name	2011-12-31	CLIFTONLARSONALLEN LLP
Accountancy firm EIN	2011-12-31	410746749
2010 : NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2010 401k financial data
Unrealized appreciation/depreciation of other (non real estate) assets	2010-12-31	$-17,027,161
Total unrealized appreciation/depreciation of assets	2010-12-31	$-17,027,161
Total transfer of assets from this plan	2010-12-31	$17,528,618
Total liabilities at end of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2010-12-31	$0
Total liabilities at beginning of year (benefit claims payable, operating payabales, acquisition indebtedness and other liabilities)	2010-12-31	$0
Total income from all sources (including contributions)	2010-12-31	$227,847,043
Total loss/gain on sale of assets	2010-12-31	$211,095
Total of all expenses incurred	2010-12-31	$138,684,157
Benefit payments and payments to participlants,beneficiaries,insurance carriers and others	2010-12-31	$137,913,764
Expenses. Certain deemed distributions of participant loans	2010-12-31	$506,342
Value of total corrective distributions	2010-12-31	$1,387
Total contributions o plan (from employers,participants, others, non cash contrinutions)	2010-12-31	$106,457,530
Value of total assets at end of year	2010-12-31	$1,582,393,866
Value of total assets at beginning of year	2010-12-31	$1,510,759,598
Total of administrative expenses incurred including professional, contract, advisory and management fees	2010-12-31	$262,664
Total interest from all sources	2010-12-31	$2,628,433
Total dividends received (eg from common stock, registered investment company shares)	2010-12-31	$28,896,727
Has a resolution to terminate the plan been adopted during the plan year or any prior plan year	2010-12-31	No
Total dividends received from registered investment company shares (eg mutual funds)	2010-12-31	$25,408,730
Was this plan covered by a fidelity bond	2010-12-31	Yes
Value of fidelity bond cover	2010-12-31	$15,000,000
If this is an individual account plan, was there a blackout period	2010-12-31	No
Were there any nonexempt tranactions with any party-in-interest	2010-12-31	No
Contributions received from participants	2010-12-31	$82,251,835
Participant contributions at end of year	2010-12-31	$55,202,221
Participant contributions at beginning of year	2010-12-31	$52,483,682
Participant contributions at end of year	2010-12-31	$1,202,720
Participant contributions at beginning of year	2010-12-31	$1,320,180
Income. Received or receivable in cash from other sources (including rollovers)	2010-12-31	$10,481,134
Value of other receiveables (less allowance for doubtful accounts) at end of year	2010-12-31	$2,354,801
Value of other receiveables (less allowance for doubtful accounts) at beginning of year	2010-12-31	$2,031,386
Administrative expenses (other) incurred	2010-12-31	$262,664
Total non interest bearing cash at end of year	2010-12-31	$0
Total non interest bearing cash at beginning of year	2010-12-31	$51,573
Did the receive any noncash contributions whose value was neither redily determinable on an established market nor set by an independent third party appraiser	2010-12-31	No
Value of net income/loss	2010-12-31	$89,162,886
Value of net assets at end of year (total assets less liabilities)	2010-12-31	$1,582,393,866
Value of net assets at beginning of year (total assets less liabilities)	2010-12-31	$1,510,759,598
Did the plan have a loss casued by fraud or dishonesty (regardless whether reimbursed by fidelity bond)	2010-12-31	No
Were any loans by the plan or fixed income obligations due to the plan in default	2010-12-31	No
Were any leases to which the plan was party in default or uncollectible	2010-12-31	No
Value of interest in registered invesment companies (eg mutual funds) at end of year	2010-12-31	$997,147,859
Value of interest in registered invesment companies (eg mutual funds) at beginning of year	2010-12-31	$880,366,894
Interest on participant loans	2010-12-31	$2,628,433
Value of interest in master investment trust accounts at end of year	2010-12-31	$369,153,666
Value of interest in master investment trust accounts at beginning of year	2010-12-31	$176,973,591
Value of interest in common/collective trusts at end of year	2010-12-31	$55,194,527
Value of interest in common/collective trusts at beginning of year	2010-12-31	$296,345,015
Net investment gain/loss from registered investment companies (e.g. mutual funds)	2010-12-31	$56,230,133
Net investment gain or loss from common/collective trusts	2010-12-31	$-94,241
Were any plan transactions or series of transactions in excess of 5% of the current value of the plan assets	2010-12-31	No
Was there a failure to transmit to the plan any participant contributions	2010-12-31	No
Has the plan failed to provide any benefit when due under the plan	2010-12-31	No
Contributions received in cash from employer	2010-12-31	$13,724,561
Employer contributions (assets) at end of year	2010-12-31	$468,391
Employer contributions (assets) at beginning of year	2010-12-31	$393,065
Income. Dividends from common stock	2010-12-31	$3,487,997
Benefit payments and payments to provide benefits directly to participlants or beneficiaries including direct rollovers	2010-12-31	$137,913,764
Was the provided the required notice or one of the exceptions to providing the black out period notice applied under 29 CFR 2520.101-3	2010-12-31	No
Assets. Corporate common stocks other than exployer securities at end of year	2010-12-31	$101,669,681
Assets. Corporate common stocks other than exployer securities at beginning of year	2010-12-31	$100,794,212
Did the plan have assets held for investment	2010-12-31	Yes
Did the plan hold any assets whose current value was neither redily determinable on an established market nor set by an independent third party appraiser	2010-12-31	No
Were all the plan assets eitehr distributed to particpants/beneficiaries, transferred to another plan or brought under the control of the PBGC	2010-12-31	No
Aggregate proceeds on sale of assets	2010-12-31	$20,848,658
Aggregate carrying amount (costs) on sale of assets	2010-12-31	$20,637,563
Accountant perfomed limited scope audit pursuant to 29 CFR 2520.103-8 and/or 103-12(d)	2010-12-31	No
Opinion of an independent qualified public accountant for this plan	2010-12-31	Unqualified
Accountancy firm name	2010-12-31	CLIFTON GUNDERSON LLP
Accountancy firm EIN	2010-12-31	370802863

Form 5500 Responses for NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II

2022: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2022 form 5500 responses
2022-01-01	Type of plan entity	Single employer plan
2022-01-01	Submission has been amended	No
2022-01-01	This submission is the final filing	No
2022-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2022-01-01	Plan is a collectively bargained plan	Yes
2022-01-01	Plan funding arrangement – Trust	Yes
2022-01-01	Plan benefit arrangement - Trust	Yes
2021: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2021 form 5500 responses
2021-01-01	Type of plan entity	Single employer plan
2021-01-01	Submission has been amended	No
2021-01-01	This submission is the final filing	No
2021-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2021-01-01	Plan is a collectively bargained plan	Yes
2021-01-01	Plan funding arrangement – Trust	Yes
2021-01-01	Plan benefit arrangement - Trust	Yes
2020: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2020 form 5500 responses
2020-01-01	Type of plan entity	Single employer plan
2020-01-01	Submission has been amended	No
2020-01-01	This submission is the final filing	No
2020-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2020-01-01	Plan is a collectively bargained plan	Yes
2020-01-01	Plan funding arrangement – Trust	Yes
2020-01-01	Plan benefit arrangement - Trust	Yes
2019: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2019 form 5500 responses
2019-01-01	Type of plan entity	Single employer plan
2019-01-01	Submission has been amended	No
2019-01-01	This submission is the final filing	No
2019-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2019-01-01	Plan is a collectively bargained plan	Yes
2019-01-01	Plan funding arrangement – Trust	Yes
2019-01-01	Plan benefit arrangement - Trust	Yes
2018: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2018 form 5500 responses
2018-01-01	Type of plan entity	Single employer plan
2018-01-01	Submission has been amended	No
2018-01-01	This submission is the final filing	No
2018-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2018-01-01	Plan is a collectively bargained plan	Yes
2018-01-01	Plan funding arrangement – Trust	Yes
2018-01-01	Plan benefit arrangement - Trust	Yes
2017: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2017 form 5500 responses
2017-01-01	Type of plan entity	Single employer plan
2017-01-01	Submission has been amended	No
2017-01-01	This submission is the final filing	No
2017-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2017-01-01	Plan is a collectively bargained plan	Yes
2017-01-01	Plan funding arrangement – Trust	Yes
2017-01-01	Plan benefit arrangement - Trust	Yes
2016: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2016 form 5500 responses
2016-01-01	Type of plan entity	Single employer plan
2016-01-01	Submission has been amended	No
2016-01-01	This submission is the final filing	No
2016-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2016-01-01	Plan is a collectively bargained plan	Yes
2016-01-01	Plan funding arrangement – Trust	Yes
2016-01-01	Plan benefit arrangement - Trust	Yes
2015: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2015 form 5500 responses
2015-01-01	Type of plan entity	Single employer plan
2015-01-01	Submission has been amended	No
2015-01-01	This submission is the final filing	No
2015-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2015-01-01	Plan is a collectively bargained plan	Yes
2015-01-01	Plan funding arrangement – Trust	Yes
2015-01-01	Plan benefit arrangement - Trust	Yes
2014: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2014 form 5500 responses
2014-01-01	Type of plan entity	Single employer plan
2014-01-01	Submission has been amended	No
2014-01-01	This submission is the final filing	No
2014-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2014-01-01	Plan is a collectively bargained plan	Yes
2014-01-01	Plan funding arrangement – Trust	Yes
2014-01-01	Plan benefit arrangement - Trust	Yes
2013: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2013 form 5500 responses
2013-01-01	Type of plan entity	Single employer plan
2013-01-01	Submission has been amended	No
2013-01-01	This submission is the final filing	No
2013-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2013-01-01	Plan is a collectively bargained plan	Yes
2013-01-01	Plan funding arrangement – Trust	Yes
2013-01-01	Plan benefit arrangement - Trust	Yes
2012: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2012 form 5500 responses
2012-01-01	Type of plan entity	Single employer plan
2012-01-01	Submission has been amended	No
2012-01-01	This submission is the final filing	No
2012-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2012-01-01	Plan is a collectively bargained plan	Yes
2012-01-01	Plan funding arrangement – Trust	Yes
2012-01-01	Plan benefit arrangement - Trust	Yes
2011: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2011 form 5500 responses
2011-01-01	Type of plan entity	Single employer plan
2011-01-01	Submission has been amended	No
2011-01-01	This submission is the final filing	No
2011-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2011-01-01	Plan is a collectively bargained plan	Yes
2011-01-01	Plan funding arrangement – Trust	Yes
2011-01-01	Plan benefit arrangement - Trust	Yes
2009: NATIONAL GRID USA CO. INCENTIVE THRIFT PLAN II 2009 form 5500 responses
2009-01-01	Type of plan entity	Single employer plan
2009-01-01	Submission has been amended	No
2009-01-01	This submission is the final filing	No
2009-01-01	This return/report is a short plan year return/report (less than 12 months)	No
2009-01-01	Plan is a collectively bargained plan	Yes
2009-01-01	Plan funding arrangement – Trust	Yes
2009-01-01	Plan benefit arrangement - Trust	Yes

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NATIONAL GRID RENEWABLES DEVELOPMENT, LLC 401(K) PLAN [EIN = 300893581]

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Company Name:	NATIONAL GRID USA SERVICE COMPANY, INC.
Employer identification number (EIN):	041663150
NAIC Classification:	221100