Oak Street Solar
Hampden County, Massachusetts · EIA plant ID 63690 · Operator: Citizens Enterprises Corporation
Nameplate4MWSummer 4 MW
Generators1in service
Net generation5GWh12 mo to Dec 2025
Capacity factor18%solar units, summer MW
Heat rate—thermal plants only
First online2019
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) |
|---|---|---|---|
| 2019 | 0 | 0.0% | — |
| 2020 | 4.8 | 15.7% | — |
| 2021 | 5.5 | 17.9% | — |
| 2022 | 5.5 | 17.8% | — |
| 2023 | 5.4 | 17.6% | — |
| 2024 | 5.6 | 18.2% | — |
| 2025 | 5.4 | 17.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| PV1 | Solar Photovoltaic | PV | 3.5 | 3.5 | Dec 2019 | Operating | — | coming soon |
Owner / operator
Operator: Citizens Enterprises Corporation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Citizens Solar Holdings IX, LLC | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Indian Orchard PV Facility | 2 MW | 0.3 km |
| Putts Bridge | 3 MW | 1.3 km |
| Indian Orchard | 4 MW | 1.6 km |
| Masspower | 261 MW | 2.3 km |
| Indian Orchard Plant 1 | 6 MW | 2.4 km |
| Cottage Street Solar Facility | 3 MW | 3.4 km |