MMWEC Simple Cycle Gas Turbine
Essex County, Massachusetts · EIA plant ID 63559 · Operator: Massachusetts Mun Wholes Electric Co
Nameplate65MWSummer 63 MW
Generators1in service
Net generation8GWh12 mo to Dec 2025
Capacity factor2%gas/coal/oil units, summer MW
Heat rate13,668Btu/kWhfossil units, electric fuel, HHV
First online2024Runs as rarely runs
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) |
|---|---|---|---|
| 2023 | 0 | — | — |
| 2024 | 0 | 0.0% | — |
| 2025 | 8.3 | 1.5% | 13,668 |
Fuel capability
Gas-fired turbines (CT/GT/CA/CS) that can also burn liquid fuel. EIA-860 Schedule 3 for capability, EIA-923 for actual burn.
StatusLikely still dual fuel
Liquid fuel burned · 36 mo78,438 MMBtu
Last month with liquid burnDec 2025
Switch while operatingYes
Net summer MW on gas63
Net summer MW on oil59
Time gas → oilup to 1 h (EIA 1H)
Time oil → gasup to 1 h (EIA 1H)
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 |
|---|---|---|---|---|---|---|---|---|
| GT1 | Natural Gas Fired Combustion Turbine | GT | 65 | 63 | Jul 2024 | Operating | — | coming soon |
| 1 | Natural Gas Fired Combustion Turbine | GT | 70 | 55 | planned Jul 2022 | not_current | — | coming soon |
Owner / operator
Operator: Massachusetts Mun Wholes Electric Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Massachusetts Mun Wholes Electric Co | 100.0% | 65 MW |
Nearby plants
Within 80 km.
| Waters River | 44 MW | 0.1 km |
| Rousselot Inc | retired | 2.6 km |
| IXYS - Beverly | 3 MW | 4.3 km |
| Kearsarge 100 Sohier Rd | 4 MW | 4.5 km |
| Salem Harbor Power Development LP | 798 MW | 4.5 km |
| Beverly | 2 MW | 5.3 km |