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Power plant · Nuclear

Key facts

Power plant · Nuclear Operating

Capacity: Capacity: sourceEIA-860M · 30 Oct 2026Open licenseMW

Commissioned: 1975
Net generation, 2025: 16,708,717 MWh
Grid: 345 kV to NSTAR Electric Company (ISNE)
Location: New London County, Connecticut
Operated by: Dominion Energy Nuclear Conn Inc

Net generation, 2025: 16,708,717MWh
Fuel burned, 2025: 174,495,593MMBtu
Capacity factor, 2025: 84.4%
Heat rate, 2025: 10,443Btu/kWh

Capacity factor % of full output, by year

Heat rate Btu per kWh, by year

Net generation, fuel burned, capacity factor and heat rate by year, newest first, as EIA's bulk electricity file states them.
Year	Net generation (MWh)	Fuel burned (MMBtu)	Capacity factor	Heat rate (Btu/kWh)
2026 (8 of 12 months)	11,214,890	117,117,098	—	10,443
2025	16,708,717	174,495,593	84.4%	10,443
2024	16,870,305	176,169,878	85.0%	10,443
2023	13,669,458	142,873,979	69.0%	10,452
2022	16,464,167	172,011,343	83.2%	10,448
2021	17,216,509	179,552,917	87.0%	10,429
2020	15,714,855	164,157,034	79.2%	10,446
2019	16,733,398	174,724,156	84.5%	10,442
2018	16,881,492	176,490,067	85.3%	10,455
2017	16,499,621	172,571,642	83.4%	10,459
2016	16,575,492	173,354,887	83.5%	10,458
2015	17,410,917	182,092,035	87.9%	10,458
2014	15,840,619	165,678,794	80.0%	10,459
2013	17,079,582	178,460,094	86.3%	10,449
2012	17,077,887	178,952,230	86.0%	10,479
2011	15,927,837	166,668,886	80.5%	10,464
2010	16,750,304	175,074,178	84.6%	10,452
2009	16,657,382	174,702,620	84.1%	10,488
2008	15,432,946	161,860,737	77.7%	10,488
2007	16,386,142	171,808,702	82.8%	10,485
2006	16,589,446	173,094,276	83.8%	10,434
2005	15,562,122	162,390,743	78.6%	10,435
2004	16,539,097	172,453,164	83.3%	10,427
2003	16,078,095	167,549,828	81.2%	10,421
2002	14,918,272	155,776,597	75.4%	10,442
2001	15,427,767	161,096,744	77.9%	10,442

How these are worked out

Net generation and fuel burned are the monthly figures EIA publishes in its bulk electricity file, from the plant's Form 923 reports; a year is the sum of its months. Capacity factor is a full year's net generation over today's nameplate capacity times the hours in that year (8,784 in a leap year), so a plant uprated or partly retired since reads against its current size; heat rate is fuel burned over net generation, for plants that burn fuel. A year with fewer than twelve months stated has no capacity factor, and a value outside the plausible range is left blank rather than shown. By month, the charts apply the same rules to each month's own hours and fuel.

Sources

3 sources

Sources EIA-860M · GEM · EIA

Sources

EIA-860M Preliminary Monthly Electric Generator InventoryOpen license · retrieved 4 Nov 2026
Global Energy Monitor — Global Integrated Power Tracker (unit-level power plants, eight technologies, all statuses)Open license, with credit · retrieved 26 Oct 2026Global Integrated Power Tracker, Global Energy Monitor, September 2026 release (https://globalenergymonitor.org/projects/global-integrated-power-tracker), CC BY 4.0. Modified by Inframation: TransitionZero-sourced rows removed; statuses and technologies mapped to Inframation's vocabulary; figures aggregated. Copyright © Global Energy Monitor. Global Integrated Power Tracker, September 2026 release. Distributed under a Creative Commons Attribution 4.0 International License.
EIA Open Data bulk file — Electricity (ELEC.zip; monthly plant net generation and fuel consumption since 2001)Open license · retrieved 1 Nov 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)

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