Pfizer Groton Fuel Cell
New London County, Connecticut · EIA plant ID 60392 · Operator: Groton Fuel Cell 1 LLC
Nameplate6MWSummer 6 MW
Generators2in service
Net generation36GWh12 mo to Dec 2025
Capacity factor74%gas/coal/oil units, summer MW
Heat rate8,549Btu/kWhfossil units, electric fuel, HHV
First online2016Runs 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) |
|---|---|---|---|
| 2016 | 7.9 | 63.6% | 10,320 |
| 2017 | 42 | 85.6% | 8,486 |
| 2018 | 44 | 89.6% | 8,862 |
| 2019 | 41.6 | 84.8% | 9,208 |
| 2020 | 32.6 | 66.2% | 9,699 |
| 2021 | 40.1 | 81.7% | 12,132 |
| 2022 | 38.8 | 79.1% | 8,024 |
| 2023 | 42.1 | 85.8% | 8,213 |
| 2024 | 30.1 | 61.2% | 8,021 |
| 2025 | 36.2 | 73.9% | 8,549 |
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 |
|---|---|---|---|---|---|---|---|---|
| MM-24 | Other Natural Gas | FC | 2.8 | 2.8 | Oct 2016 | Operating | — | coming soon |
| MM-25 | Other Natural Gas | FC | 2.8 | 2.8 | Oct 2016 | 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% | 6 MW |
Nearby plants
Within 80 km.
| Pfizer Groton Plant | 38 MW | 0.7 km |
| Groton Flanders Road Landfill | — | 2.5 km |
| Water Treatment 1 & 2 | 5 MW | 2.9 km |
| Yale New Haven - New London | 2 MW | 2.9 km |
| Bridge Street 1 & 2 | 5 MW | 3.4 km |
| Gary Court 1 & 2 | 5 MW | 4.3 km |