Montague Solar
Gilliam County, Oregon · EIA plant ID 63441 · Operator: Avangrid Renewables Inc
Nameplate162MWSummer 162 MW
Generators1in service
Net generation279GWh12 mo to Aug 2026
Capacity factor20%solar units, summer MW
Heat rate—thermal plants only
First online2023
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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) |
|---|---|---|---|
| 2023 | 290.6 | 27.2% | — |
| 2024 | 313.1 | 22.0% | — |
| 2025 | 379.2 | 26.7% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| S1 | Solar Photovoltaic | PV | 162 | 162 | Apr 2023 | Operating | — | coming soon |
Owner / operator
Operator: Avangrid Renewables Inc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Avangrid Renewables Inc | 100.0% | 162 MW |
Nearby plants
Within 80 km.
| Shutler Energy Storage | — | 0 km |
| Oregon Trail Solar | — | 1.6 km |
| Montague Wind Power Facility LLC | 200 MW | 8.6 km |
| Waste Management Columbia Ridge LFGTE | 13 MW | 9.9 km |
| Leaning Juniper | 110 MW | 12.7 km |
| Leaning Juniper Wind Power II | 199 MW | 13.8 km |