Century
Hamilton County, Iowa · EIA plant ID 56252 · Operator: MidAmerican Energy Co
Nameplate201MWSummer 201 MW
Generators3in service
Net generation609GWh12 mo to Dec 2025
Capacity factor35%wind units, summer MW
Heat rate—thermal plants only
First online2005
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) |
|---|---|---|---|
| 2005 | 149.8 | 27.7% | — |
| 2006 | 544.2 | 33.6% | — |
| 2007 | 563.8 | 34.5% | — |
| 2008 | 536.8 | 30.6% | — |
| 2009 | 493.2 | 28.1% | — |
| 2010 | 496.8 | 28.3% | — |
| 2011 | 544 | 31.1% | — |
| 2012 | 569.6 | 32.4% | — |
| 2013 | 565.6 | 32.3% | — |
| 2014 | 589.1 | 33.6% | — |
| 2015 | 510.2 | 29.1% | — |
| 2016 | 436.7 | 24.9% | — |
| 2017 | 408.3 | 23.3% | — |
| 2018 | 529.8 | 30.2% | — |
| 2019 | 536.3 | 30.4% | — |
| 2020 | 570 | 32.3% | — |
| 2021 | 570.4 | 32.4% | — |
| 2022 | 688.5 | 39.1% | — |
| 2023 | 570 | 32.3% | — |
| 2024 | 572 | 32.4% | — |
| 2025 | 608.9 | 34.5% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| CWF | Onshore Wind Turbine | WT | 150 | 150 | Sep 2005 | Operating | — | ge 1.5-82.5 |
| CWF2 | Onshore Wind Turbine | WT | 35 | 35 | Dec 2007 | Operating | — | mitsubishi MWT-1000A |
| CWF3 | Onshore Wind Turbine | WT | 16.2 | 16.2 | Dec 2007 | Operating | — | ge 1.6-87 |
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% | 201 MW |
Nearby plants
Within 80 km.
| Webster City | 21 MW | 17.9 km |
| Leonardo Wind 1 LLC | 3 MW | 23.3 km |
| Franklin County Wind Farm | 99 MW | 25 km |
| POET Biorefining - Jewell | 5 MW | 26.3 km |
| Whispering Willow North | 201 MW | 29.5 km |
| Alliant SBD 9502 Eaton | retired | 30.6 km |