Show on map
Tunnel — Power plant · Oil · FirstLight Power Resources Services LLC
  • Combustion
  • Operating
  • 10 · 100 · 1,000 MW

Power plant · Oil

Key facts

Power plant · Oilran 3% of 2025 Standby
Capacity
Capacity: sourceEIA-860M · Open licenseMW
Commissioned
1919
Net generation, 2025
5,929 MWh
Grid
23 kV to Connecticut Light & Power Co (ISNE)
Location
New London County, Connecticut

Operations

Net generation, 2025
5,929MWh
Fuel burned, 2025
20,229MMBtu
Capacity factor, 2025
3.3%
Heat rate, 2025
Not stated
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.
YearNet generation (MWh)Fuel burned (MMBtu)Capacity factorHeat rate (Btu/kWh)
20255,92920,2293.3%—
20247,72226,3474.3%—
202311,89843,1076.6%—
20227,29826,6724.1%—
202111,186100,2366.2%8,961
20208,49778,5394.7%9,243
20199,40485,5475.2%9,097
201810,974101,7036.1%9,268
201710,629100,4525.9%9,451
20166,10657,5093.4%9,418
20155,64353,9503.1%9,560
20147,72773,9934.3%9,576
20138,33580,6864.6%9,680
20127,41570,9204.1%9,564
201112,821126,4227.1%9,860
20107,32873,4734.1%10,026
200911,398112,4666.3%9,867
200810,933109,7586.1%10,039
20069,05595,8155.0%10,581
200512,210131,0766.8%10,735
20049,485100,6135.3%10,608
2003 (10 of 12 months)9,13896,512—10,562
20026,19472,0603.5%11,634
20016,45472,0333.6%11,161
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

2 sources

Sources EIA-860M · EIA

Sources

  • EIA-860MOpen license · retrieved Nov 4, 2026
  • 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

View at source