Power plants in Hampden County, Massachusetts
79 operating power plants in Hampden County, Massachusetts, with 1,402 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
79
Nameplate capacity
1,402 MW
Net generation, 2025
1.83 TWh
77 of 79 plants reported
Largest power plants in Hampden County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Stony BrookOil and natural gas | 538 | 104 | – |
| 2 | Berkshire PowerNatural gas | 289 | 810 | 32.0% |
| 3 | MasspowerNatural gas | 261 | 442 | 19.3% |
| 4 | Hadley FallsHydro | 33 | 137 | 46.9% |
| 5 | Cobble MountainHydro | 33 | 7.1 | 2.4% |
| 6 | Huxley SolarSolar and battery storage | 10 | 10.2 | 23.3% |
| 7 | Syncarpha Blandford Hybrid CSGSolar and battery storage | 8.8 | 7.9 | 18.8% |
| 8 | Front StreetOil | 8.1 | 1.2 | 1.7% |
| 9 | Mt. Tom Solar Project HybridSolar and battery storage | 7.6 | 4.2 | 11.2% |
| 10 | Breckenridge SolarSolar and battery storage | 7.2 | 6.2 | 14.3% |
| 11 | Riverside HolyokeHydro | 6.9 | 22.5 | 37.2% |
| 12 | CES Agawam Tuckahoe Solar HybridSolar and battery storage | 6.2 | 6.7 | 21.1% |
| 13 | Indian Orchard Plant 1Natural gas | 5.7 | 2.2 | 4.4% |
| 14 | Three Rivers Solar LLCSolar and battery storage | 5.4 | 5.5 | 15.9% |
| 15 | East Longmeadow Solar PVSolar | 5.0 | 8.4 | 19.2% |
| 16 | Southwick Solar PVSolar | 5.0 | 7.9 | 17.9% |
| 17 | Holiday Hill Community WindWind | 5.0 | 11.6 | 26.4% |
| 18 | TollandSolar | 5.0 | 7.6 | 17.4% |
| 19 | Hampden Landfill Solar LLCSolar and battery storage | 4.9 | 1.8 | 11.0% |
| 20 | Chester Solar FarmSolar | 4.8 | 6.0 | 14.3% |
| 21 | Syncarpha Palmer, LLCSolar | 4.8 | 7.2 | 17.1% |
| 22 | Sunpin BlandfordSolar | 4.7 | 6.3 | 15.3% |
| 23 | Southwick Solar, LLC Community SolarSolar | 4.7 | 3.5 | – |
| 24 | ENGIE 2019 ProjectCo-MA1, LLCSolar | 4.5 | 2.7 | 6.9% |
| 25 | Palmer LandfillSolar | 4.0 | 6.0 | 17.1% |
| 26 | Springfield Solar PVSolar | 4.0 | 5.5 | 15.8% |
| 27 | Goose Pond SolarSolar | 4.0 | 7.0 | 19.9% |
| 28 | WilbrahamSolar | 4.0 | 5.6 | 15.8% |
| 29 | Indian OrchardHydro | 3.7 | 3.5 | 10.7% |
| 30 | Kearsarge Ludlow LLCSolar | 3.7 | 5.6 | 17.2% |
| 31 | GSPP Terrawatt Westfield LLC CSGSolar | 3.6 | 6.0 | 19.0% |
| 32 | Hampden Solar PVSolar | 3.5 | 5.8 | 19.0% |
| 33 | PalmerSolar | 3.5 | 5.7 | 18.7% |
| 34 | Tolland Solar NG LLCSolar | 3.5 | 4.6 | 15.1% |
| 35 | Oak Street SolarSolar | 3.5 | 5.4 | 17.7% |
| 36 | Kearsarge Southwick LLCSolar | 3.3 | 4.7 | 16.2% |
| 37 | Putts BridgeHydro | 3.2 | 10.6 | 37.7% |
| 38 | Cottage Street Solar FacilitySolar | 3.2 | 3.6 | 12.9% |
| 39 | HampdenSolar | 3.2 | 4.9 | 17.4% |
| 40 | BoatlockHydro | 3.1 | 11.6 | 42.7% |
| 41 | Chicopee SolarSolar | 3.0 | 4.4 | 16.8% |
| 42 | Monson SolarSolar | 3.0 | 3.8 | 14.4% |
| 43 | 205 Sturbridge ASolar | 3.0 | 3.8 | 14.5% |
| 44 | CED Chicopee SolarSolar | 3.0 | 4.8 | 18.2% |
| 45 | Russell (MA)Solar | 3.0 | 4.9 | 18.5% |
| 46 | Stanley Black & DeckerSolar | 3.0 | 0.0 | – |
| 47 | International Paper Woronoco MillHydro | 2.8 | 6.6 | 27.0% |
| 48 | Holyoke Solar Cooperative at MuellerSolar | 2.7 | 3.8 | 16.0% |
| 49 | Cabot HolyokeHydro | 2.6 | 3.0 | 13.0% |
| 50 | Palmer Solar LLCSolar | 2.5 | – | – |
| 51 | Peterson Road SolarSolar | 2.5 | 4.3 | 19.4% |
| 52 | Ludlow LandfillSolar | 2.3 | 3.2 | 16.0% |
| 53 | Chicopee River SolarSolar | 2.0 | 2.9 | 16.6% |
| 54 | 201 Sturbridge BSolar | 2.0 | 2.5 | 14.0% |
| 55 | CED Westfield Solar, LLCSolar | 2.0 | 2.7 | 15.3% |
| 56 | 301 Chestnut Solar NGSolar | 2.0 | 2.2 | 12.4% |
| 57 | Monson Solar, LLCSolar | 2.0 | 3.2 | 18.0% |
| 58 | Bowden Solar LLCSolar | 2.0 | 3.3 | 18.7% |
| 59 | ChicopeeSolar | 2.0 | 2.3 | 13.1% |
| 60 | Indian Orchard PV FacilitySolar | 1.9 | 2.4 | 14.6% |
| 61 | Smith & Wesson at Springfield MA PVSolar | 1.9 | 2.4 | 14.2% |
| 62 | Ludlow Site 72 - ContiSolar | 1.9 | 2.5 | 15.2% |
| 63 | BrimfieldSolar | 1.9 | 3.2 | 19.1% |
| 64 | Citizens Agawam Landfill SolarSolar | 1.8 | 2.6 | 16.2% |
| 65 | ZPD-PT Solar Project 2017-021 LLC HybridSolar and battery storage | 1.7 | 1.6 | 18.4% |
| 66 | ChemicalHydro | 1.6 | 5.1 | 36.7% |
| 67 | Chicopee Granby Road SolarSolar | 1.6 | 2.4 | 17.0% |
| 68 | Agawam SolarSolar | 1.5 | 2.0 | 15.4% |
| 69 | Route 57 SolarSolar | 1.5 | 2.2 | 16.6% |
| 70 | Twiss Street SolarSolar | 1.5 | 0.2 | 1.6% |
| 71 | Texon Hydroelectric ProjectHydro | 1.5 | 3.9 | 29.9% |
| 72 | East Springfield Solar PVSolar | 1.4 | 1.9 | 15.3% |
| 73 | Indian River HydroHydro | 1.4 | 1.8 | 14.7% |
| 74 | DwightHydro | 1.2 | 5.6 | 53.2% |
| 75 | Collins FacilityHydro | 1.2 | – | – |
| 76 | Browne Solar LLCSolar | 1.0 | 1.4 | 16.3% |
| 77 | Indian Hill Solar LLCSolar | 1.0 | 1.4 | 16.2% |
| 78 | State Street Solar LLCSolar | 1.0 | 1.5 | 16.6% |
| 79 | WYM 1250 Palmer LLCSolar | 1.0 | 1.5 | 16.8% |
MW is the nameplate capacity of operating generators and batteries. Source: EIA-860M August 2026, published 2026-09-24, and EIA-923 2025. Page updated 2026-10-04. Data sources
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Other counties in Massachusetts
Worcester County188 plants · 1,953 MWPlymouth County69 plants · 473 MWBristol County65 plants · 592 MWMiddlesex County59 plants · 474 MWBerkshire County42 plants · 1,024 MWHampshire County38 plants · 160 MWNorfolk County37 plants · 2,731 MWEssex County33 plants · 1,151 MWFranklin County33 plants · 1,334 MW