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Limerick — Power plant · Nuclear · Constellation Nuclear
  • Clean firm
  • Operating
  • 10 · 100 · 1,000 MW

Limerick

Power plant · Nuclear

Key facts

Power plant · Nuclearran 98% of 2025 Operating
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1986
Net generation, 2025
19,454,276 MWh
Grid
500 kV, 230 kV to PECO Energy Co (PJM)
Location
Montgomery County, Pennsylvania
Operated by
Constellation NuclearSourceEIA-860M Preliminary Monthly Electric Generator Inventory
Net generation, 2025
19,454,276MWh
Fuel burned, 2025
203,168,524MMBtu
Capacity factor, 2025
97.5%
Heat rate, 2025
10,443Btu/kWh
Capacity factor % of full output, by year
Heat rate Btu per kWh, by year
YearNet generation (MWh)Fuel burned (MMBtu)Capacity factorHeat rate (Btu/kWh)
2026 (8 of 12 months)12,542,949130,986,017—10,443
202519,454,276203,168,52497.5%10,443
202419,360,342202,172,34396.8%10,443
202319,094,075199,572,39495.7%10,452
202219,167,156200,251,14296.1%10,448
202119,309,328201,379,16596.8%10,429
202019,344,764202,074,98596.7%10,446
201919,345,594201,999,77197.0%10,442
201819,338,626202,178,53897.0%10,455
201718,552,957194,047,74593.0%10,459
201619,395,375202,846,65397.0%10,458
201518,931,377197,993,76494.9%10,458
201419,077,244199,531,01395.6%10,459
201319,542,065204,189,93498.0%10,449
201218,155,616190,245,31690.8%10,479
201118,462,503193,191,63492.6%10,464
201018,926,074197,815,32794.9%10,452
200919,330,846202,741,91596.9%10,488
200819,047,262199,767,68495.2%10,488
200719,053,534199,776,30095.5%10,485
200619,197,184200,303,41796.2%10,434
200518,905,850197,282,54594.8%10,435
200419,349,537201,757,62296.7%10,427
200319,400,264202,170,15197.3%10,421
200219,296,344201,492,42596.7%10,442
200119,376,453202,328,92297.1%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-860MOpen license · retrieved Nov 4, 2026
  • GEMOpen license, with credit · retrieved Oct 26, 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.
  • EIAOpen license · retrieved Nov 1, 2026Source: U.S. Energy Information Administration, Electricity bulk data (Form EIA-923 monthly plant series)

Every source and license · Attribution

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