Power plants in Barnstable County, Massachusetts
24 operating power plants in Barnstable County, Massachusetts, with 1,597 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Largest power plants in Barnstable County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | CanalOil and natural gas | 1,495 | 374 | – |
| 2 | Outer Cape Community BatteryBattery storage | 25 | −0.1 | – |
| 3 | Marston Mills SolarSolar and battery storage | 8.0 | 6.3 | 14.3% |
| 4 | Blacksmith Road Solar 1Solar and battery storage | 7.0 | 8.5 | 19.7% |
| 5 | 665 Scenic HighwaySolar and battery storage | 5.8 | 0.1 | 0.2% |
| 6 | ASD Cotuit MA Solar LLCSolar and battery storage | 5.6 | 4.2 | 15.4% |
| 7 | Dennis LandfillSolar | 5.0 | 7.7 | 17.5% |
| 8 | TJA MA Wakeby RoadSolar | 5.0 | 1.0 | – |
| 9 | MA Military Reservation Wind ProjectWind | 4.5 | 5.1 | 12.8% |
| 10 | Harwich LandfillSolar | 4.0 | 5.9 | 16.8% |
| 11 | Barnstable LandfillSolar | 4.0 | 4.9 | 14.0% |
| 12 | SandwichSolar and battery storage | 4.0 | 4.2 | 24.2% |
| 13 | 0 MiddleSolar and battery storage | 4.0 | 3.4 | 15.7% |
| 14 | Green MeadowsSolar | 3.5 | 5.1 | 16.5% |
| 15 | Cape Cod Air Force Station - 6 SWSWind | 3.4 | 6.6 | 22.1% |
| 16 | Falmouth Landfill SolarSolar | 3.0 | 4.7 | 18.0% |
| 17 | Notus Wind 1Wind | 1.7 | 5.0 | 33.8% |
| 18 | Chatham LandfillSolar | 1.5 | 2.4 | 18.1% |
| 19 | Mashpee Landfill SolarSolar | 1.5 | 2.0 | 15.2% |
| 20 | Falmouth 2 SolarSolar | 1.5 | 2.7 | 20.7% |
| 21 | CVEC Round 4 Brewster Captn Golf CourseSolar and battery storage | 1.2 | 1.1 | 15.9% |
| 22 | Renew Canal 1 CSG LLCSolar | 1.2 | 1.9 | 17.6% |
| 23 | Brewster LandfillSolar | 1.0 | 1.6 | 17.7% |
| 24 | 118 EchoSolar | 1.0 | 0.8 | 9.3% |
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
More power plant lists for Massachusetts
Largest power plants in Massachusetts50 plants · 11,834 MWSolar farms in Massachusetts554 plants · 1,498 MWWind farms in Massachusetts19 plants · 897 MWBattery storage projects in Massachusetts131 projects · 739 MWNatural gas power plants in Massachusetts43 plants · 6,537 MWHydroelectric power plants in Massachusetts28 plants · 265 MW
Other counties in Massachusetts
Worcester County188 plants · 1,953 MWHampden County79 plants · 1,402 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 MW