Natural gas power plants in Connecticut
47 operating natural gas power plants in Connecticut with 4,952 MW of natural gas capacity, largest first. From EIA-860M, August 2026.
Plants
47
Natural gas capacity
4,952 MW
Net generation, 2025
24.7 TWh
46 of 47 plants reported
Largest natural gas power plants in Connecticut
| # | Plant | Natural gas MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | CPV Towantic Energy CenterNew Haven County | 842 | 4,812 | 65.3% |
| 2 | Lake Road Generating PlantWindham County | 840 | 5,815 | 79.0% |
| 3 | Kleen Energy SystemsMiddlesex County | 693 | 3,216 | 53.0% |
| 4 | Milford Power ProjectNew Haven County | 578 | 3,368 | 66.5% |
| 5 | Bridgeport StationFairfield County | 576 | 3,373 | 66.8% |
| 6 | Bridgeport Energy ProjectFairfield County | 520 | 2,398 | 52.6% |
| 7 | Wallingford EnergyNew Haven County | 350 | 107 | 3.5% |
| 8 | Waterbury GenerationNew Haven County | 96 | 55.0 | 6.5% |
| 9 | A L PierceNew Haven County | 84 | 0.0 | – |
| 10 | Algonquin Windsor LocksHartford County | 71 | 138 | 22.2% |
| 11 | Pfizer Groton PlantNew London County | 38 | 75.0 | 22.8% |
| 12 | Kimberly Clark-Unit 1,2,3Litchfield County | 36 | 233 | 73.4% |
| 13 | Pratt & WhitneyHartford County | 26 | 65.9 | 29.2% |
| 14 | UCONN Cogen FacilityTolland County | 26 | 111* | – |
| 15 | Bridgeport Fuel Cell, LLCFairfield County | 17 | 90.4 | 62.2% |
| 16 | Rand Whitney CHP PlantNew London County | 17 | 133 | 92.3% |
| 17 | Foxwoods CoGenNew London County | 16 | 10.8 | 7.6% |
| 18 | Derby Fuel CellNew Haven County | 14 | 110 | 89.9% |
| 19 | Hartford Hospital CogenerationHartford County | 12 | 49.1 | 47.5% |
| 20 | Generate Colchester Fuel Cells, LLCNew London County | 10 | 72.4 | 82.6% |
| 21 | Sikorsky Aircraft CHPFairfield County | 9.8 | 65.3 | 75.3% |
| 22 | Subase Microgrid ProjectNew London County | 7.4 | 29.6 | 45.7% |
| 23 | Naval Sub Base New London Fuel CellNew London County | 7.4 | 29.9 | 46.1% |
| 24 | Bradley Energy CenterHartford County | 5.8 | 11.3 | 22.2% |
| 25 | Pfizer Groton Fuel CellNew London County | 5.6 | 36.2 | 73.9% |
| 26 | South Windsor Fuel CellHartford County | 5.0 | 37.4 | 85.4% |
| 27 | Frito Lay IncorporatedWindham County | 4.6 | 24.8 | 61.5% |
| 28 | Fairfield University CHP PlantFairfield County | 4.5 | 23.3 | 59.2% |
| 29 | Danbury Hospital Cogen PlantFairfield County | 4.3 | 21.6 | 57.3% |
| 30 | HSCo CHPHartford County | 4.0 | 27.7 | 79.0% |
| 31 | UDR Glastonbury Fuel CellHartford County | 3.4 | 15.8 | 53.2% |
| 32 | Cellu TissueHartford County | 3.0 | 10.7 | 40.7% |
| 33 | UI RCP New Haven Fuel CellNew Haven County | 2.8 | 15.7 | 64.0% |
| 34 | UI RCP Bridgeport SeasideFairfield County · Natural gas and solar | 2.8 | 19.3 | – |
| 35 | UI RCP Woodbridge FCNew Haven County | 2.8 | 16.7 | 68.3% |
| 36 | Pepperidge Farm BloomfieldHartford County | 2.6 | – | – |
| 37 | Wesleyan University Cogen 1Middlesex County | 2.4 | 4.0 | 19.3% |
| 38 | Medtronic - New HavenNew Haven County | 2.3 | 18.0 | 89.5% |
| 39 | Medtronic - New Haven 2New Haven County | 2.2 | 16.9 | 87.7% |
| 40 | Yale New Haven - New LondonNew London County | 1.8 | 14.0 | 88.9% |
| 41 | CCSU Fuel Cell ProjectHartford County | 1.4 | 7.0 | 57.1% |
| 42 | Trinity College Fuel CellHartford County | 1.4 | 11.1 | 90.3% |
| 43 | UB Fuel CellFairfield County | 1.4 | 10.1 | 82.3% |
| 44 | Connecticut CollegeNew London County | 1.2 | 10.1 | 96.4% |
| 45 | FDX010.0 FedEx Fuel CellMiddlesex County | 1.0 | 8.1 | 92.0% |
| 46 | Stamford Health Tully Health CenterFairfield County · Oil and natural gas | 0.7 | 5.1 | 39.0% |
| 47 | IKEA New Haven Rooftop PV & Fuel CellNew Haven County · Solar and natural gas | 0.3 | 2.7 | 27.9% |
* Fewer than 12 months of 2025 reported, so the total is partial.
Projects where natural gas is the largest fuel or at least a fifth of nameplate capacity. MW is natural gas nameplate only; net generation covers the whole project. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources