401(k) · DOL Form 5500 · 2024

National Grid USA Service Company, Inc. 401(k) Plan

Data updated 2026-08-25

$6.4B
Total assets Very large vs avg
17,179
Participants Very large workforce
100th
Percentile by assets National rank
$374,613
Avg per participant High balance/head
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Official DOL plan name: National Grid USA Co. Incentive Thrift Plan · Sponsored by National Grid USA Service Company, Inc. · New York · Utilities

$6.4B in assets, 17,179 participants

National Grid USA Service Company, Inc.'s National Grid USA Co. Incentive Thrift Plan reported $6.4B in total assets and 17,179 participants in its 2024 DOL Form 5500 filing, ranking in the 100th percentile by assets among filed plans. Figures are as reported by the plan sponsor to the Department of Labor, not audited or endorsed by PlainRetire.

  • #723 in Utilities (732 peers)

Coverage in New York

National Grid USA Co. Incentive Thrift Plan covers 17,179 participants in New York, 22x the typical New York plan (state average ~798 per filing). Assets: $6.4B.

#723
in Utilities (732 peers)
+9.1%
assets growth YoY
65×
vs typical plan assets (national mean)

National Grid USA Co. Incentive Thrift Plan's outsized position by total assets

National Grid USA Co. Incentive Thrift Plan vs every filed plan by assets

End-of-year total assets · plan year 2024 · DOL Form 5500

$6,435,482,235 Highest reported value at or above every one of 123,620 filed plans

This plan $0 $2,050,000,000 every filed plan with reported assets, bucketed by value

Dashed line + filled bar = this entry, among filed plans.

Source U.S. Department of Labor Form 5500 filings (EBSA) · plan year 2024

National Grid USA Co. Incentive Thrift Plan's mega-plan peer group by participant headcount

Plan-year 2024 Form 5500 filings with a reported participant count, partitioned by headcount band, not by assets. National Grid USA Co. Incentive Thrift Plan is a mega filing (17,179 participants), the rightmost band on the breakdown.

What changed between DOL Form 5500 filings

plan year 2023 → plan year 2024

  • National Grid USA Co. Incentive Thrift Plan reported net income fell from $688M in the plan year 2023 filing to $538M in the plan year 2024 filing.
  • National Grid USA Co. Incentive Thrift Plan end-of-year assets rose from $5.9B in the plan year 2023 filing to $6.4B in the plan year 2024 filing.
  • National Grid USA Co. Incentive Thrift Plan reported participants rose from 16,248 in the plan year 2023 filing to 17,179 in the plan year 2024 filing.

See the national 2023→2024 release diff →

EBSA filing schedule strip

Filing strip 041663150 · National Grid USA Service Company, Inc. PY 2024 · 401(k)

National Grid USA Co. Incentive Thrift Plan · $6.4B · 17,179 · 100th

  • PCT $6.4B
  • PCT 17,179
  • PCT 100th
  • PCT 401(k)
  • PCT near Danaher Corporation & Subsidiaries Savings Plan
  • PCT ind #723

Stamps derive from this plan's Form 5500 line items (assets, participants, type, EIN, cohort placement) - not a quality rating of the sponsor. Read with Utilities retirement plans → · Plans in New York →

National Grid USA Co. Incentive Thrift Plan in the asset neighbourhood

Motorola Solutions 401(k) PlanMotorola Solutions 401(k) Pl…$6.5BDanaher Corporation & Subsidiaries Savings PlanDanaher Corporation & Subsid…$6.5BNational Grid USA Co. Incentive Thrift PlanNational Grid USA Co. Incent…$6.4BEdison 401(k) Savings Plan$6.4BJacobs 401(k) Plus Savings PlanJacobs 401(k) Plus Savings P…$6.4B
End-of-year total assets ($B) among National Grid USA Co. Incentive Thrift Plan and nearest nationwide 401(k) peers. Source: DOL Form 5500 plan year 2024.

New York filing particulars

Total Assets (Beginning of Year)$5.9B
Net Assets (End of Year)$6.4B
Net Income$538M
Employer EIN041663150
Plan Effective Date1984-09-01
Filing StatusFILING RECEIVED

Sponsor Plan History (National Grid USA Service Company, Inc.)

Sponsor-wide plan assets over time

All National Grid USA Service Company, Inc. plans reported in each filing year

Latest sponsor-wide plan assets
$13.5B 5.030290688647641% vs 2022
2024 filing year
$12.6B$12.8B$13B$13.2B$13.4B$13.6B 202220232024 $12.8B $13.5B ▲ +5.0%
Year Plans Participants Total Assets
2022 7 30,556 $12.8B
2023 7 25,487 $13.0B
2024 7 26,129 $13.5B

Nearby 401(k) Plans in New York

Peer 401(k) plans, same state, same plan type, ranked by total assets.

National Grid USA Co. Incentive Thrift Plan vs. nearby 401(k) plans in New York, assets vs. participants Scatter plot of 6 data points. 050000100000150000 020406080 Total assets ($B) Participants National Grid USA Co. Incentive Thrift Plan, Total assets ($B): 6.435482235 · Participants: 17179National Grid USA Co. Incentive Thrift PlanIBM 401(k) Plan, Total assets ($B): 60.39355615 · Participants: 52674IBM 401(k) PlanMorgan Stanley 401(k) Plan, Total assets ($B): 22.180692974 · Participants: 53860Morgan Stanley 401(k) PlanPfizer Savings Plan, Total assets ($B): 21.9871528 · Participants: 33309Pfizer Savings PlanThe Pepsico Savings Plan, Total assets ($B): 14.9369507 · Participants: 137398The Pepsico Savings PlanThe Goldman Sachs 401(k) Plan, Total assets ($B): 12.807939404 · Participants: 23227The Goldman Sachs 401(k) Plan
National Grid USA Co. Incentive Thrift Plan vs. nearby 401(k) plans in New York, assets vs. participants
Compare National Grid USA Co. Incentive Thrift Plan side-by-side with 3 peers →

Scale composition for National Grid USA Co. Incentive Thrift Plan

National Grid USA Co. Incentive Thrift Plan reports $6.4B in end-of-year assets across 17,179 participants (0.052% of the $12.3T held by all Form 5500 filers in the national rollup , and 0.018% of 93,925,755 covered participants) - about $374,613 per participant (2.7x the national average assets-per-participant) . Net income for plan year 2024 was $538M.

This plan identity (EIN 041663150, plan #007) has 3 Form 5500 filings on file from 2022 to 2024 , with end-of-year assets moving from $5.2B to $6.4B (+23.5%) while covered participants moved from 20,346 to 17,179 . Single-year sparse filers cannot show that trail.

Plan year Participants EOY assets Filing
2022 20,346 $5.2B Open filing
2023 16,248 $5.9B Open filing
2024 · index core 17,179 $6.4B This page

The same sponsor also keeps 4 other index-core plans on PlainRetire:

National Grid USA Co. Incentive Thrift Plan's out-of-state 401(k) peers by assets and headcount

Outside New York, the nearest 401(k) by assets is Danaher Corporation & Subsidiaries Savings Plan in DC ($6.5B); by covered participants it is Cencora Employee Investment Plan in PA (17,175 participants). Same-state nearby plans are listed separately above.

Closest by plan assets

Nearest other-state filings by tot_assets_eoy ($6.4B here).

Similar participant headcount

Nearest other-state filings by covered participants (17,179 participants); asset peers above are excluded.

DOL Form 5500 plan year 2024. Asset totals can differ widely at the same headcount; neither axis is a quality rating.

Frequently Asked Questions

How did National Grid USA Co. Incentive Thrift Plan assets move in 2024? ▼
National Grid USA Co. Incentive Thrift Plan grew at a solid clip - up 9.1% during 2024, from $5.9B to $6.4B. Reported net income was $538M.
How have National Grid USA Service Company, Inc. plan assets changed over time? ▼
Across 3 plan years on file (2022-2024), National Grid USA Service Company, Inc.'s sponsor-wide assets grew 5.0%, from $12.8B to $13.5B.
Where does National Grid USA Co. Incentive Thrift Plan rank by assets among Form 5500 filers? ▼
National Grid USA Co. Incentive Thrift Plan ranks in the 100th percentile by end-of-year assets among 123,622 plans that reported assets for plan year 2024 (among the largest 1% of all filed plans).
Which 401(k) plans are similar in size to National Grid USA Co. Incentive Thrift Plan? ▼
Among 401(k) plans in other states, the closest by assets is Danaher Corporation & Subsidiaries Savings Plan in DC ($6.5B, 23,090 participants).
Which 401(k) plans cover a similar participant headcount to National Grid USA Co. Incentive Thrift Plan? ▼
Among 401(k) plans in other states, the closest by covered participants is Cencora Employee Investment Plan in PA (17,175 participants, $2.1B in assets).

Source: U.S. Department of Labor, Employee Benefits Security Administration (EBSA), Form 5500 public disclosure dataset. Plan year 2024.

Source: DOL EFAST2 filing system (efast.dol.gov) - original filing retrieval by EIN 041663150.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from U.S. Department of Labor Form 5500 filings (EBSA). See our methodology for details.