Top of Iowa WindfarmRetirement planned
Worth County, Iowa · EIA plant ID 55804 · Operator: Old Gold Energy Center, LLC
Nameplate80MWSummer 80 MW
Generators1in service
Net generation57GWh12 mo to Dec 2025
Capacity factor8%wind units, summer MW
Heat rate—thermal plants only
First online2001Retirement planned Sep 2027
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) |
|---|---|---|---|
| 2002 | 169.9 | 24.3% | — |
| 2003 | 93.9 | 13.4% | — |
| 2004 | 96.8 | 13.8% | — |
| 2005 | 87.4 | 12.5% | — |
| 2006 | 194.7 | 27.8% | — |
| 2007 | 205.5 | 29.3% | — |
| 2008 | 187.4 | 26.7% | — |
| 2009 | 172.9 | 24.7% | — |
| 2010 | 167.8 | 23.9% | — |
| 2011 | 179.1 | 25.6% | — |
| 2012 | 170.1 | 24.2% | — |
| 2013 | 169.8 | 24.2% | — |
| 2014 | 170.2 | 24.3% | — |
| 2015 | 172.5 | 24.6% | — |
| 2016 | 178.9 | 25.4% | — |
| 2017 | 149.3 | 21.3% | — |
| 2018 | 116.9 | 16.7% | — |
| 2019 | 124.1 | 17.7% | — |
| 2020 | 128.4 | 18.3% | — |
| 2021 | 149.6 | 21.3% | — |
| 2022 | 161.3 | 23.0% | — |
| 2023 | 106.8 | 15.2% | — |
| 2024 | 78.4 | 11.2% | — |
| 2025 | 57.1 | 8.2% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| NM | Onshore Wind Turbine | WT | 80 | 80 | Oct 2001 | Operating · retirement planned | Sep 2027 | neg-micon NM52/900 |
| PH2 | Onshore Wind Turbine | WT | 80 | 80 | planned Jun 2007 | not_current | — | coming soon |
| PH3 | Onshore Wind Turbine | WT | 30 | 30 | planned Jun 2007 | not_current | — | coming soon |
Owner / operator
Operator: Old Gold Energy Center, LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Old Gold Energy Center, LLC | 100.0% | 80 MW |
Nearby plants
Within 80 km.
| Top of Iowa Windfarm III | 30 MW | 8.2 km |
| Northern Iowa Windpower II | 80 MW | 9.9 km |
| Lake Mills | 18 MW | 10.1 km |
| POET Biorefining-Hanlontown, LLC | 4 MW | 10.3 km |
| Lake Mills Gas Recovery | 4 MW | 11.5 km |
| Roeder Family Wind Farm LLC | 2 MW | 14.4 km |