Power plants in Essex County, Massachusetts
33 operating power plants in Essex County, Massachusetts, with 1,151 MW of nameplate capacity, largest first. From EIA-860M, August 2026.
Plants
33
Nameplate capacity
1,151 MW
Net generation, 2025
2.56 TWh
32 of 33 plants reported
Largest power plants in Essex County
| # | Plant | MW | GWh, 2025 | Capacity factor |
|---|---|---|---|---|
| 1 | Salem Harbor Power Development LPNatural gas | 798 | 1,794 | 25.7% |
| 2 | MMWEC Simple Cycle Gas TurbineNatural gas | 65 | 8.3 | 1.5% |
| 3 | Wheelabrator SaugusMunicipal solid waste | 58 | 185 | 36.5% |
| 4 | Covanta HaverhillMunicipal solid waste | 46 | 198* | 58.6% |
| 5 | Waters RiverNatural gas | 44 | 5.5 | 1.0% |
| 6 | Wheelabrator North AndoverMunicipal solid waste | 40 | 240 | 68.0% |
| 7 | Lawrence Hydroelectric AssociatesHydro | 15 | 58.9 | 45.4% |
| 8 | High Street StationNatural gas | 8.5 | 0.2 | 0.2% |
| 9 | Middleton Solar ParkSolar and battery storage | 8.0 | 6.6 | 15.1% |
| 10 | Wilkins StationOil | 5.4 | 0.0 | 0.1% |
| 11 | Bradford SolarSolar | 5.0 | 6.8 | 15.5% |
| 12 | Kearsarge Amesbury HybridSolar and battery storage | 4.9 | 5.0 | 17.9% |
| 13 | True NorthSolar | 4.8 | 6.0 | 14.2% |
| 14 | Kearsarge HaverhillSolar and battery storage | 4.8 | 3.9 | 17.1% |
| 15 | Hunt Road SolarSolar | 4.5 | 7.0 | 17.6% |
| 16 | Equity Industrial TurbinesWind | 4.0 | – | – |
| 17 | Kearsarge 100 Sohier RdSolar and battery storage | 3.8 | 2.9 | 17.3% |
| 18 | BWC Rams Horn Channel LLCSolar | 3.5 | 5.6 | 18.2% |
| 19 | Groveland SolarSolar | 3.2 | 4.3 | 15.4% |
| 20 | DG Haverhill CSGSolar | 3.0 | 7.3 | 27.7% |
| 21 | IXYS - BeverlyNatural gas and oil | 2.7 | −9.0 | – |
| 22 | BeverlySolar | 2.0 | 3.3 | 18.6% |
| 23 | Ayers Village SolarSolar | 2.0 | 2.8 | 16.0% |
| 24 | Bashaw Solar CSG 1, LLCSolar | 2.0 | 2.9 | 16.5% |
| 25 | Aegean Drive SolarSolar | 1.8 | 2.4 | 15.3% |
| 26 | Danton XI Solar LLCSolar | 1.8 | 1.8 | 11.6% |
| 27 | Hewlett-Packard (HP) - Andover, MASolar | 1.7 | 2.3 | 15.6% |
| 28 | Ipswich Wind TurbineWind | 1.6 | 2.1 | 15.3% |
| 29 | General Electric Aircraft EnginesSolar | 1.5 | 2.5 | 18.9% |
| 30 | Merrimac SolarSolar | 1.5 | 2.0 | 15.3% |
| 31 | 515 Main SaugusSolar | 1.3 | 1.9 | 16.5% |
| 32 | Methuen LandfillSolar | 1.1 | 1.5 | 15.7% |
| 33 | Haverhill Solar Power ProjectSolar | 1.0 | 1.2 | 13.3% |
* Fewer than 12 months of 2025 reported, so the total is partial.
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 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 MWFranklin County33 plants · 1,334 MW