Milner Butte LFGE
Cassia County, Idaho · EIA plant ID 63755 · Operator: Southern Idaho Solid Waste
Nameplate4MWSummer 4 MW
Generators3in service
Net generation27GWh12 mo to Dec 2025
Capacity factor78%other units, summer MW
Heat rate—thermal plants only
First online2018
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), other 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 | 16.3 | 71.6% | — |
| 2020 | 17.7 | 77.3% | — |
| 2021 | 18.3 | 80.5% | — |
| 2022 | 18.3 | 80.3% | — |
| 2023 | 18.4 | 62.5% | — |
| 2024 | 24.1 | 70.4% | — |
| 2025 | 26.7 | 78.1% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| E1 | Landfill Gas | IC | 1.3 | 1.3 | Jun 2023 | Operating | — | coming soon |
| E2 | Landfill Gas | IC | 1.3 | 1.3 | Oct 2018 | Operating | — | coming soon |
| E3 | Landfill Gas | IC | 1.3 | 1.3 | Oct 2018 | Operating | — | coming soon |
Owner / operator
Operator: Southern Idaho Solid Waste. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Southern Idaho Solid Waste | 100.0% | 4 MW |
Nearby plants
Within 80 km.
| Milner Dam Wind Park LLC | 20 MW | 1.3 km |
| Burley Butte Windpark | 21 MW | 6.9 km |
| Milner Hydro | 60 MW | 7.2 km |
| Golden Valley Wind Park LLC | 12 MW | 7.3 km |
| Bypass | 10 MW | 11.3 km |
| S E Hazelton A | 9 MW | 14.3 km |