Horn Rapids Solar, Storage and Training
Benton County, Washington · EIA plant ID 64198 · Operator: Energy Northwest
Nameplate4MWSummer 4 MW
Generators2in service
Net generation5GWh12 mo to Dec 2025
Capacity factor17%solar units, summer MW
Heat rate—thermal plants only
First online2020
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) |
|---|---|---|---|
| 2020 | 0.4 | 5.6% | — |
| 2021 | 5.6 | 20.5% | — |
| 2022 | 5.6 | 20.8% | — |
| 2023 | 6.6 | 20.4% | — |
| 2024 | 5.2 | 19.4% | — |
| 2025 | 4.6 | 17.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| HRBE | Batteries | BA | 1 | 1 | Dec 2020 | Operating | — | coming soon |
| HRPV | Solar Photovoltaic | PV | 3.2 | 3.2 | Oct 2020 | Operating | — | coming soon |
Owner / operator
Operator: Energy Northwest. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Tucci Energy Services | 76.2% | 3 MW |
| Energy Northwest | 23.8% | 1 MW |
Nearby plants
Within 80 km.
| Eltopia Branch Canal 4.6 | 2 MW | 5.9 km |
| Potholes East Canal 66.0 | 2 MW | 5.9 km |
| Columbia Generating Station | 1,200 MW | 13.2 km |
| Chandler | 12 MW | 22.7 km |
| Nine Canyon | 96 MW | 33.5 km |
| Ice Harbor | 603 MW | 35.9 km |