Prairie Creek
Linn County, Iowa · EIA plant ID 1073 · Operator: Interstate Power and Light Co
×15 MW coal retired since 2020 (latest Dec 2025)
Nameplate199MWSummer 141 MW
Generators2in service
Net generation53GWh12 mo to Aug 2026
Capacity factor4%gas/coal/oil units, summer MW
Heat rate8,868Btu/kWhfossil units, electric fuel, HHV
First online1958Runs as peaking
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), gas/coal/oil 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.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 992.6 | 57.3% | 10,329 |
| 2002 | 861.3 | 45.4% | 10,506 |
| 2003 | 986.6 | 51.2% | 10,618 |
| 2004 | 942 | 50.2% | 16,323 |
| 2005 | 918 | 51.1% | 10,772 |
| 2006 | 720.8 | 44.2% | 10,388 |
| 2007 | 833.8 | 45.1% | 11,616 |
| 2008 | 329.4 | 17.8% | 19,338 |
| 2009 | 44.4 | 2.5% | 27,948 |
| 2010 | 731.4 | 45.6% | 12,055 |
| 2011 | 550.3 | 36.9% | 12,443 |
| 2012 | 558.9 | 40.6% | 12,851 |
| 2013 | 457.2 | 33.2% | 12,912 |
| 2014 | 703.4 | 48.9% | 12,341 |
| 2015 | 308.3 | 21.6% | 13,762 |
| 2016 | 322.1 | 22.5% | 7,040 |
| 2017 | 322.3 | 25.8% | 7,064 |
| 2018 | 130.7 | 10.7% | 8,035 |
| 2019 | 43.2 | 3.5% | 11,943 |
| 2020 | 48.8 | 3.7% | 12,205 |
| 2021 | 82.9 | 6.3% | 9,603 |
| 2022 | 129.8 | 9.9% | 8,194 |
| 2023 | 81.6 | 6.0% | 9,703 |
| 2024 | 67.6 | 4.9% | 9,818 |
| 2025 | 95.3 | 7.7% | 9,231 |
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 |
|---|---|---|---|---|---|---|---|---|
| 3 | Conventional Steam Coal | ST | 50 | 29.3 | Oct 1958 | Operating | — | coming soon |
| 4 | Natural Gas Steam Turbine | ST | 148.8 | 111.7 | Apr 1967 | Operating | — | coming soon |
| 1 | Conventional Steam Coal | ST | 14.6 | — | Apr 1997 | Retired Dec 2025 | — | coming soon |
| 2 | Conventional Steam Coal | ST | 23 | — | May 1951 | Retired Nov 2010 | — | coming soon |
Owner / operator
Operator: Interstate Power and Light Co. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Interstate Power and Light Co | 100.0% | 199 MW |
Nearby plants
Within 80 km.
| Alliant SBD 9203 Profol | 6 MW | 1 km |
| Alliant SBD 9901 Wells Fargo | retired | 2.2 km |
| Kirkwood Wind Turbine | retired | 3.2 km |
| Alliant SBD 9403 Aegon DC | 4 MW | 3.3 km |
| Alliant SBD0201 Penford Produc | 6 MW | 3.7 km |
| Deer Run Battery | 5 MW | 4.6 km |