- Combustion
- Operating
- 10 · 100 · 1,000 MW
Map
- Combustion
- Operating
Subase Microgrid Project: location. Basemap: Protomaps, © OpenStreetMap contributors, ODbL.
Subase Microgrid Project
Power plant · Gas, other
Key facts
Power plant · Gas, otherran 46% of 2025 Operating- Capacity
- Capacity: sourceEIA-860M · Open licenseMW
- Commissioned
- 2022
- Net generation, 2025
- 29,610 MWh
- Grid
- 14 kV to Groton Dept of Utilities - (CT) (ISNE)
- Location
- New London County, Connecticut
- Operated by
- Connecticut Mun Elec Engy Coop
Operations
- Net generation, 2025
- 29,610
MWh - Fuel burned, 2025
- 238,169
MMBtu - Capacity factor, 2025
- 45.7
% - Heat rate, 2025
- 8,044
Btu/kWh
| Year | Net generation (MWh) | Fuel burned (MMBtu) | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|---|
| 2025 | 29,610 | 238,169 | 45.7% | 8,044 |
| 2024 | 43,080 | 307,021 | 66.3% | 7,127 |
| 2023 | 34,211 | 241,843 | 52.8% | 7,069 |
| 2022 (1 of 12 months) | 19,133 | 150,852 | — | 7,884 |
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.