Butler Solar Power Project
Bates County, Missouri · EIA plant ID 58959 · Operator: Missouri Jnt Muni.Pwr Elec. Ut. Comm.
Nameplate3MWSummer 3 MW
Generators1in service
Net generation4GWh12 mo to Aug 2026
Capacity factor17%solar units, summer MW
Heat rate—thermal plants only
First online2014
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) |
|---|---|---|---|
| 2014 | 4.1 | 19.8% | — |
| 2015 | 4.6 | 18.7% | — |
| 2016 | 4.7 | 19.1% | — |
| 2017 | 4.5 | 18.4% | — |
| 2018 | 4.1 | 16.7% | — |
| 2019 | 4.1 | 16.6% | — |
| 2020 | 4.2 | 16.9% | — |
| 2021 | 4.2 | 17.1% | — |
| 2022 | 4.3 | 17.5% | — |
| 2023 | 4.5 | 18.3% | — |
| 2024 | 4.5 | 18.3% | — |
| 2025 | 4.2 | 16.9% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| BSF1 | Solar Photovoltaic | PV | 2.8 | 2.8 | Mar 2014 | Operating | — | coming soon |
Owner / operator
Operator: Missouri Jnt Muni.Pwr Elec. Ut. Comm.. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| MPUA | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Butler Municipal Power Plant | 11 MW | 0.8 km |
| Swan Solar | — | 22.3 km |
| La Cygne | 1,599 MW | 27.2 km |
| Beavertail Solar | — | 36.5 km |
| Nevada | 22 MW | 46.7 km |
| South Harper | 351 MW | 47.1 km |