Mars Hill
Aroostook County, Maine · EIA plant ID 67154 · Operator: Greenbacker Renewable Energy Corporation
Nameplate3MWSummer 3 MW
Generators1in service
Net generation4GWh12 mo to Dec 2025
Capacity factor17%solar units, summer MW
Heat rate—thermal plants only
First online2024
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), solar 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2024 | 0.1 | 2.5% | — |
| 2025 | 3.8 | 16.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 577 | Solar Photovoltaic | PV | 2.6 | 2.6 | Nov 2024 | Operating | — | coming soon |
Owner / operator
Operator: Greenbacker Renewable Energy Corporation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Greenbacker Renewable Energy Corporation | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Mars Hill Wind Farm Project | 42 MW | 6.3 km |
| ME - Novel (Lighthouse Ph I) Mars Hill | 3 MW | 6.7 km |
| Easton CSG 1 LLC | 3 MW | 14.2 km |
| ME Fort Fairfield Solar Plant | 3 MW | 20.8 km |
| Mechanic Street (CSG) | 3 MW | 22 km |
| Missile Street (CSG) | 3 MW | 24.3 km |