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Poweshiek County, Iowa · EIA plant ID 62133 · Operator: MidAmerican Energy Co
Nameplate340MWSummer 340 MW
Generators2in service
Net generation1,307GWh12 mo to Aug 2026
Capacity factor44%wind units, summer MW
Heat rate—thermal plants only
First online2018
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), wind 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) |
|---|---|---|---|
| 2018 | 57.6 | 38.7% | — |
| 2019 | 837.4 | 45.1% | — |
| 2020 | 1,250.2 | 41.9% | — |
| 2021 | 1,267.1 | 41.6% | — |
| 2022 | 1,468.3 | 49.3% | — |
| 2023 | 1,285.7 | 43.2% | — |
| 2024 | 1,337.1 | 44.8% | — |
| 2025 | 1,320.8 | 44.4% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | WT | 140 | 140 | Dec 2019 | Operating | — | vestas V110-2.0 |
| GT1 | Onshore Wind Turbine | WT | 200 | 200 | Dec 2018 | Operating | — | vestas V110-2.0 |
Owner / operator
Operator: MidAmerican Energy Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| MidAmerican Energy Co | 100.0% | 340 MW |
Nearby plants
Within 80 km.
| Montezuma | 10 MW | 6.6 km |
| Brooklyn | 2 MW | 10.4 km |
| English Farms | 172 MW | 11.1 km |
| Brooklyn City North Plant | 2 MW | 11.8 km |
| Venus Wind 3 LLC | 3 MW | 18.1 km |
| Grinnell College | 4 MW | 22.5 km |