Civic Intelligence

Connecticut Yankee Atomic Power Company

Plan context: CONNECTICUT YANKEE ATOMIC POWER COMPANY 401(K) PLAN

EIN 06-0790937 • East Hampton, CT • 59 filings • 14 plans

362 Injun Hollow RoadEast Hampton, CT 06424
Current Snapshot

Latest Year

2025

2025 Participants

8

2025 Assets

$218,152

2025 Contributions

$652,318

Historical Graphs

Total Assets Over Time

Aggregate end-of-year assets by filing year, excluding zero-asset years

$63,797,343$31,898,672$0199920122025YearValue
$218,152Latest year 2025

Participants Over Time

Largest reported end-of-year plan headcount by filing year, used to avoid double-counting participants across overlapping plans

100500199920122025YearValue
8Latest year 2025

Company Timeline

Year summaries and individual filings are combined here so you can stay in one place while moving across years and plan filings.

Year / FilingFilingsParticipantsAssetsContributionsContrib./Participant
202518$218,152$652,318$81,540iApproximate average salary by contribution assumption: employee only about $2,038,494 at 4% or $1,358,996 at 6%; with 50% employer match about $1,358,996 at 4% or $905,997 at 6%; with 100% employer match about $1,019,247 at 4% or $679,498 at 6%.
CONNECTICUT YANKEE ATOMIC POWER COMPANY 401(K) PLAN-8$218,152$652,318$81,540iApproximate average salary by contribution assumption: employee only about $2,038,494 at 4% or $1,358,996 at 6%; with 50% employer match about $1,358,996 at 4% or $905,997 at 6%; with 100% employer match about $1,019,247 at 4% or $679,498 at 6%.
202418$19,590,994$383,405$47,926iApproximate average salary by contribution assumption: employee only about $1,198,141 at 4% or $798,760 at 6%; with 50% employer match about $798,760 at 4% or $532,507 at 6%; with 100% employer match about $599,070 at 4% or $399,380 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-8$19,590,994$383,405$47,926iApproximate average salary by contribution assumption: employee only about $1,198,141 at 4% or $798,760 at 6%; with 50% employer match about $798,760 at 4% or $532,507 at 6%; with 100% employer match about $599,070 at 4% or $399,380 at 6%.
202318$19,117,437$388,366$48,546iApproximate average salary by contribution assumption: employee only about $1,213,644 at 4% or $809,096 at 6%; with 50% employer match about $809,096 at 4% or $539,397 at 6%; with 100% employer match about $606,822 at 4% or $404,548 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-8$19,117,437$388,366$48,546iApproximate average salary by contribution assumption: employee only about $1,213,644 at 4% or $809,096 at 6%; with 50% employer match about $809,096 at 4% or $539,397 at 6%; with 100% employer match about $606,822 at 4% or $404,548 at 6%.
202218$17,910,297$296,825$37,103iApproximate average salary by contribution assumption: employee only about $927,578 at 4% or $618,385 at 6%; with 50% employer match about $618,385 at 4% or $412,257 at 6%; with 100% employer match about $463,789 at 4% or $309,193 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-8$17,910,297$296,825$37,103iApproximate average salary by contribution assumption: employee only about $927,578 at 4% or $618,385 at 6%; with 50% employer match about $618,385 at 4% or $412,257 at 6%; with 100% employer match about $463,789 at 4% or $309,193 at 6%.
202117$21,539,313$269,313$38,473iApproximate average salary by contribution assumption: employee only about $961,832 at 4% or $641,221 at 6%; with 50% employer match about $641,221 at 4% or $427,481 at 6%; with 100% employer match about $480,916 at 4% or $320,611 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-7$21,539,313$269,313$38,473iApproximate average salary by contribution assumption: employee only about $961,832 at 4% or $641,221 at 6%; with 50% employer match about $641,221 at 4% or $427,481 at 6%; with 100% employer match about $480,916 at 4% or $320,611 at 6%.
202017$19,855,144$279,922$39,989iApproximate average salary by contribution assumption: employee only about $999,721 at 4% or $666,481 at 6%; with 50% employer match about $666,481 at 4% or $444,321 at 6%; with 100% employer match about $499,861 at 4% or $333,240 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-7$19,855,144$279,922$39,989iApproximate average salary by contribution assumption: employee only about $999,721 at 4% or $666,481 at 6%; with 50% employer match about $666,481 at 4% or $444,321 at 6%; with 100% employer match about $499,861 at 4% or $333,240 at 6%.
201916$18,674,709$237,222$39,537iApproximate average salary by contribution assumption: employee only about $988,425 at 4% or $658,950 at 6%; with 50% employer match about $658,950 at 4% or $439,300 at 6%; with 100% employer match about $494,213 at 4% or $329,475 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-6$18,674,709$237,222$39,537iApproximate average salary by contribution assumption: employee only about $988,425 at 4% or $658,950 at 6%; with 50% employer match about $658,950 at 4% or $439,300 at 6%; with 100% employer match about $494,213 at 4% or $329,475 at 6%.
201815$16,394,254$226,019$45,204iApproximate average salary by contribution assumption: employee only about $1,130,095 at 4% or $753,397 at 6%; with 50% employer match about $753,397 at 4% or $502,264 at 6%; with 100% employer match about $565,048 at 4% or $376,698 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-5$16,394,254$226,019$45,204iApproximate average salary by contribution assumption: employee only about $1,130,095 at 4% or $753,397 at 6%; with 50% employer match about $753,397 at 4% or $502,264 at 6%; with 100% employer match about $565,048 at 4% or $376,698 at 6%.
201714$18,166,374$204,451$51,113iApproximate average salary by contribution assumption: employee only about $1,277,819 at 4% or $851,879 at 6%; with 50% employer match about $851,879 at 4% or $567,919 at 6%; with 100% employer match about $638,909 at 4% or $425,940 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-4$18,166,374$204,451$51,113iApproximate average salary by contribution assumption: employee only about $1,277,819 at 4% or $851,879 at 6%; with 50% employer match about $851,879 at 4% or $567,919 at 6%; with 100% employer match about $638,909 at 4% or $425,940 at 6%.
201615$16,504,343$883,518$176,704iApproximate average salary by contribution assumption: employee only about $4,417,590 at 4% or $2,945,060 at 6%; with 50% employer match about $2,945,060 at 4% or $1,963,373 at 6%; with 100% employer match about $2,208,795 at 4% or $1,472,530 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-5$16,504,343$883,518$176,704iApproximate average salary by contribution assumption: employee only about $4,417,590 at 4% or $2,945,060 at 6%; with 50% employer match about $2,945,060 at 4% or $1,963,373 at 6%; with 100% employer match about $2,208,795 at 4% or $1,472,530 at 6%.
201515$15,815,739$1,342,507$268,501iApproximate average salary by contribution assumption: employee only about $6,712,535 at 4% or $4,475,023 at 6%; with 50% employer match about $4,475,023 at 4% or $2,983,349 at 6%; with 100% employer match about $3,356,268 at 4% or $2,237,512 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-5$15,815,739$1,342,507$268,501iApproximate average salary by contribution assumption: employee only about $6,712,535 at 4% or $4,475,023 at 6%; with 50% employer match about $4,475,023 at 4% or $2,983,349 at 6%; with 100% employer match about $3,356,268 at 4% or $2,237,512 at 6%.
201415$15,271,854$1,353,285$270,657iApproximate average salary by contribution assumption: employee only about $6,766,425 at 4% or $4,510,950 at 6%; with 50% employer match about $4,510,950 at 4% or $3,007,300 at 6%; with 100% employer match about $3,383,213 at 4% or $2,255,475 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-5$15,271,854$1,353,285$270,657iApproximate average salary by contribution assumption: employee only about $6,766,425 at 4% or $4,510,950 at 6%; with 50% employer match about $4,510,950 at 4% or $3,007,300 at 6%; with 100% employer match about $3,383,213 at 4% or $2,255,475 at 6%.
201315$13,673,947$1,360,513$272,103iApproximate average salary by contribution assumption: employee only about $6,802,565 at 4% or $4,535,043 at 6%; with 50% employer match about $4,535,043 at 4% or $3,023,362 at 6%; with 100% employer match about $3,401,282 at 4% or $2,267,522 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-5$13,673,947$1,360,513$272,103iApproximate average salary by contribution assumption: employee only about $6,802,565 at 4% or $4,535,043 at 6%; with 50% employer match about $4,535,043 at 4% or $3,023,362 at 6%; with 100% employer match about $3,401,282 at 4% or $2,267,522 at 6%.
201216$11,364,544$1,470,976$245,163iApproximate average salary by contribution assumption: employee only about $6,129,067 at 4% or $4,086,044 at 6%; with 50% employer match about $4,086,044 at 4% or $2,724,030 at 6%; with 100% employer match about $3,064,533 at 4% or $2,043,022 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-6$11,364,544$1,470,976$245,163iApproximate average salary by contribution assumption: employee only about $6,129,067 at 4% or $4,086,044 at 6%; with 50% employer match about $4,086,044 at 4% or $2,724,030 at 6%; with 100% employer match about $3,064,533 at 4% or $2,043,022 at 6%.
201114$9,755,553$1,426,498$356,625iApproximate average salary by contribution assumption: employee only about $8,915,613 at 4% or $5,943,742 at 6%; with 50% employer match about $5,943,742 at 4% or $3,962,494 at 6%; with 100% employer match about $4,457,806 at 4% or $2,971,871 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-4$9,755,553$1,426,498$356,625iApproximate average salary by contribution assumption: employee only about $8,915,613 at 4% or $5,943,742 at 6%; with 50% employer match about $5,943,742 at 4% or $3,962,494 at 6%; with 100% employer match about $4,457,806 at 4% or $2,971,871 at 6%.
201025$8,996,891$1,373,140$274,628iApproximate average salary by contribution assumption: employee only about $6,865,700 at 4% or $4,577,133 at 6%; with 50% employer match about $4,577,133 at 4% or $3,051,422 at 6%; with 100% employer match about $3,432,850 at 4% or $2,288,567 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-5$8,996,891$1,373,140$274,628iApproximate average salary by contribution assumption: employee only about $6,865,700 at 4% or $4,577,133 at 6%; with 50% employer match about $4,577,133 at 4% or $3,051,422 at 6%; with 100% employer match about $3,432,850 at 4% or $2,288,567 at 6%.
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-0$0$0-
200925$8,079,254$1,374,545$274,909iApproximate average salary by contribution assumption: employee only about $6,872,725 at 4% or $4,581,817 at 6%; with 50% employer match about $4,581,817 at 4% or $3,054,544 at 6%; with 100% employer match about $3,436,363 at 4% or $2,290,908 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-5$8,079,082$1,374,545$274,909iApproximate average salary by contribution assumption: employee only about $6,872,725 at 4% or $4,581,817 at 6%; with 50% employer match about $4,581,817 at 4% or $3,054,544 at 6%; with 100% employer match about $3,436,363 at 4% or $2,290,908 at 6%.
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-0$172$0-
200834$6,573,733$1,415,406$353,852iApproximate average salary by contribution assumption: employee only about $8,846,288 at 4% or $5,897,525 at 6%; with 50% employer match about $5,897,525 at 4% or $3,931,683 at 6%; with 100% employer match about $4,423,144 at 4% or $2,948,763 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-4$6,573,733$1,351,864$337,966iApproximate average salary by contribution assumption: employee only about $8,449,150 at 4% or $5,632,767 at 6%; with 50% employer match about $5,632,767 at 4% or $3,755,178 at 6%; with 100% employer match about $4,224,575 at 4% or $2,816,383 at 6%.
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-0---
Connecticut Yankee Atomic Power Company Retirement Plan-0-$63,542-
200734$8,907,967$2,580,010$645,003iApproximate average salary by contribution assumption: employee only about $16,125,063 at 4% or $10,750,042 at 6%; with 50% employer match about $10,750,042 at 4% or $7,166,694 at 6%; with 100% employer match about $8,062,531 at 4% or $5,375,021 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-4$8,907,967$2,580,010$645,003iApproximate average salary by contribution assumption: employee only about $16,125,063 at 4% or $10,750,042 at 6%; with 50% employer match about $10,750,042 at 4% or $7,166,694 at 6%; with 100% employer match about $8,062,531 at 4% or $5,375,021 at 6%.
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-0---
Connecticut Yankee Atomic Power Company Retirement Plan-0---
2006321$27,227,367$6,419,747$305,702iApproximate average salary by contribution assumption: employee only about $7,642,556 at 4% or $5,095,037 at 6%; with 50% employer match about $5,095,037 at 4% or $3,396,692 at 6%; with 100% employer match about $3,821,278 at 4% or $2,547,519 at 6%.
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-21$9,979,949$297,146$14,150iApproximate average salary by contribution assumption: employee only about $353,745 at 4% or $235,830 at 6%; with 50% employer match about $235,830 at 4% or $157,220 at 6%; with 100% employer match about $176,873 at 4% or $117,915 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-21$9,337,622$2,546,880$121,280iApproximate average salary by contribution assumption: employee only about $3,032,000 at 4% or $2,021,333 at 6%; with 50% employer match about $2,021,333 at 4% or $1,347,556 at 6%; with 100% employer match about $1,516,000 at 4% or $1,010,667 at 6%.
Connecticut Yankee Atomic Power Company Retirement Plan-20$7,909,796$3,575,721$178,786iApproximate average salary by contribution assumption: employee only about $4,469,651 at 4% or $2,979,768 at 6%; with 50% employer match about $2,979,768 at 4% or $1,986,512 at 6%; with 100% employer match about $2,234,826 at 4% or $1,489,884 at 6%.
2005343$18,958,635$3,888,960$90,441iApproximate average salary by contribution assumption: employee only about $2,261,023 at 4% or $1,507,349 at 6%; with 50% employer match about $1,507,349 at 4% or $1,004,899 at 6%; with 100% employer match about $1,130,512 at 4% or $753,674 at 6%.
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-34$10,868,407$387,508$11,397iApproximate average salary by contribution assumption: employee only about $284,932 at 4% or $189,955 at 6%; with 50% employer match about $189,955 at 4% or $126,637 at 6%; with 100% employer match about $142,466 at 4% or $94,977 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-43$8,090,228$3,501,452$81,429iApproximate average salary by contribution assumption: employee only about $2,035,728 at 4% or $1,357,152 at 6%; with 50% employer match about $1,357,152 at 4% or $904,768 at 6%; with 100% employer match about $1,017,864 at 4% or $678,576 at 6%.
Connecticut Yankee Atomic Power Company Retirement Plan-34---
2004462$43,442,468$2,125,015$34,274iApproximate average salary by contribution assumption: employee only about $856,861 at 4% or $571,241 at 6%; with 50% employer match about $571,241 at 4% or $380,827 at 6%; with 100% employer match about $428,430 at 4% or $285,620 at 6%.
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-62$12,480,939$500,781$8,077iApproximate average salary by contribution assumption: employee only about $201,928 at 4% or $134,619 at 6%; with 50% employer match about $134,619 at 4% or $89,746 at 6%; with 100% employer match about $100,964 at 4% or $67,309 at 6%.
Connecticut Yankee Atomic Power Company Retirement Plan-62$11,527,483--
Connecticut Yankee Atomic Power Company Retirement Plan-62$11,527,483--
Connecticut Yankee Atomic Power Company Retiree Health Plan-60$7,906,563$1,624,234$27,071iApproximate average salary by contribution assumption: employee only about $676,764 at 4% or $451,176 at 6%; with 50% employer match about $451,176 at 4% or $300,784 at 6%; with 100% employer match about $338,382 at 4% or $225,588 at 6%.
2003365$31,089,287$494,573$7,609iApproximate average salary by contribution assumption: employee only about $190,220 at 4% or $126,814 at 6%; with 50% employer match about $126,814 at 4% or $84,542 at 6%; with 100% employer match about $95,110 at 4% or $63,407 at 6%.
Connecticut Yankee Atomic Power Company Retirement Plan-63$11,793,775--
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-65$11,648,886$418,411$6,437iApproximate average salary by contribution assumption: employee only about $160,927 at 4% or $107,285 at 6%; with 50% employer match about $107,285 at 4% or $71,523 at 6%; with 100% employer match about $80,464 at 4% or $53,642 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-64$7,646,626$76,162$1,190iApproximate average salary by contribution assumption: employee only about $29,751 at 4% or $19,834 at 6%; with 50% employer match about $19,834 at 4% or $13,223 at 6%; with 100% employer match about $14,875 at 4% or $9,917 at 6%.
2002364$35,966,458$547,166$8,549iApproximate average salary by contribution assumption: employee only about $213,737 at 4% or $142,491 at 6%; with 50% employer match about $142,491 at 4% or $94,994 at 6%; with 100% employer match about $106,868 at 4% or $71,246 at 6%.
Connecticut Yankee Atomic Power Company Retirement Plan-64$18,994,131--
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-64$9,362,853$444,746$6,949iApproximate average salary by contribution assumption: employee only about $173,729 at 4% or $115,819 at 6%; with 50% employer match about $115,819 at 4% or $77,213 at 6%; with 100% employer match about $86,864 at 4% or $57,910 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-60$7,609,474$102,420$1,707iApproximate average salary by contribution assumption: employee only about $42,675 at 4% or $28,450 at 6%; with 50% employer match about $28,450 at 4% or $18,967 at 6%; with 100% employer match about $21,338 at 4% or $14,225 at 6%.
2001470$29,485,659$398,272$5,690iApproximate average salary by contribution assumption: employee only about $142,240 at 4% or $94,827 at 6%; with 50% employer match about $94,827 at 4% or $63,218 at 6%; with 100% employer match about $71,120 at 4% or $47,413 at 6%.
Connecticut Yankee Atomic Power Company Retirement Plan-64$18,680,440--
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-70$10,805,219$398,272$5,690iApproximate average salary by contribution assumption: employee only about $142,240 at 4% or $94,827 at 6%; with 50% employer match about $94,827 at 4% or $63,218 at 6%; with 100% employer match about $71,120 at 4% or $47,413 at 6%.
Connecticut Yankee Atomic Power Company Retirement Death Benefit Plan-0---
Connecticut Yankee Atomic Power Company Retiree Health Plan-0---
2000782$48,964,484$560,159$6,831iApproximate average salary by contribution assumption: employee only about $170,780 at 4% or $113,853 at 6%; with 50% employer match about $113,853 at 4% or $75,902 at 6%; with 100% employer match about $85,390 at 4% or $56,927 at 6%.
Connecticut Yankee Atomic Power Company Retirement Plan-69$35,148,521--
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-82$12,968,150$559,822$6,827iApproximate average salary by contribution assumption: employee only about $170,677 at 4% or $113,785 at 6%; with 50% employer match about $113,785 at 4% or $75,857 at 6%; with 100% employer match about $85,339 at 4% or $56,892 at 6%.
Connecticut Yankee Atomic Power Company Retirement Death Benefit Plan-0$847,813$337-
Employee Assistance Program-69---
Severance Pay Policy-50---
Northeast Utilities Service Company Group Insurance Plan-63---
Connecticut Yankee Atomic Power Company Retiree Health Plan-0---
19997100$63,797,343$907,043$9,070iApproximate average salary by contribution assumption: employee only about $226,761 at 4% or $151,174 at 6%; with 50% employer match about $151,174 at 4% or $100,783 at 6%; with 100% employer match about $113,380 at 4% or $75,587 at 6%.
Connecticut Yankee Atomic Power Company Retirement Plan-89$44,198,940--
Northeast Utilities Service Company 401K Plan Connecticut Yankee Atomic Power Company Only-100$15,592,213$858,993$8,590iApproximate average salary by contribution assumption: employee only about $214,748 at 4% or $143,166 at 6%; with 50% employer match about $143,166 at 4% or $95,444 at 6%; with 100% employer match about $107,374 at 4% or $71,583 at 6%.
Connecticut Yankee Atomic Power Company Retiree Health Plan-0$3,164,843$47,713-
Connecticut Yankee Atomic Power Company Retirement Death Benefit Plan-0$841,347$337-
Employee Assistance Program-89---
Severance Pay Policy-89---
Northeast Utilities Service Company Group Insurance Plan-89---