Naval Sub Base New London Fuel Cell
New London County, Connecticut · EIA plant ID 61743 · Operator: Groton Fuel Cell 1, LLC
Nameplate7MWSummer 7 MW
Generators2in service
Net generation30GWh12 mo to Dec 2025
Capacity factor46%gas/coal/oil units, summer MW
Heat rate6,903Btu/kWhfossil units, electric fuel, HHV
First online2022Runs as baseload
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2022 | 2.3 | 41.4% | 5,348 |
| 2023 | 34.2 | 52.7% | 7,288 |
| 2024 | 43.6 | 67.1% | 6,486 |
| 2025 | 29.9 | 46.1% | 6,903 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| MMH2 | Other Natural Gas | FC | 3.7 | 3.7 | Dec 2022 | Operating | — | coming soon |
| MMH3 | Other Natural Gas | FC | 3.7 | 3.7 | Dec 2022 | Operating | — | coming soon |
Owner / operator
Operator: Groton Fuel Cell 1, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Groton Fuel Cell 1, LLC | 100.0% | 7 MW |
Nearby plants
Within 80 km.
| Subase Microgrid Project | 7 MW | 0 km |
| CMEEC - Navy NE Trident | 1 MW | 0.7 km |
| CMEEC - Polaris Park Solar Hybrid | 4 MW | 2.2 km |
| Connecticut College | 1 MW | 2.5 km |
| Montville Station | 495 MW | 3.4 km |
| Bridge Street 1 & 2 | 5 MW | 4.1 km |