River Hills
Polk County, Iowa · EIA plant ID 1084 · Operator: MidAmerican Energy Co
Nameplate128MWSummer 113 MW
Generators8in service
Net generation2GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate26,570Btu/kWhfossil units, electric fuel, HHV
First online1966Runs as rarely runs
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 | 11.9 | 1.1% | 18,814 |
| 2002 | 1.2 | 0.1% | — |
| 2003 | -0.9 | -0.1% | — |
| 2004 | -0.7 | -0.1% | — |
| 2005 | 1.8 | 0.2% | 16,990 |
| 2006 | 1.6 | 0.1% | 29,665 |
| 2007 | 1.1 | 0.1% | — |
| 2008 | -1 | -0.1% | — |
| 2009 | -0.5 | -0.1% | — |
| 2010 | -0.5 | -0.1% | — |
| 2011 | 0.7 | 0.1% | — |
| 2012 | 2.6 | 0.3% | 24,373 |
| 2013 | 0.5 | 0.1% | — |
| 2014 | 0.6 | 0.1% | — |
| 2015 | -0.7 | -0.1% | — |
| 2016 | -0.1 | -0.0% | — |
| 2017 | -1.2 | -0.1% | — |
| 2018 | -0.8 | -0.1% | — |
| 2019 | -0.8 | -0.1% | — |
| 2020 | -0.6 | -0.1% | — |
| 2021 | 0.3 | 0.0% | — |
| 2022 | 0.8 | 0.1% | — |
| 2023 | 1.8 | 0.2% | 23,264 |
| 2024 | 1.3 | 0.1% | 27,214 |
| 2025 | 2.2 | 0.2% | 26,570 |
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 | Natural Gas Fired Combustion Turbine | GT | 16 | 14 | May 1966 | Operating | — | coming soon |
| 2 | Natural Gas Fired Combustion Turbine | GT | 16 | 14 | May 1966 | Operating | — | coming soon |
| 3 | Natural Gas Fired Combustion Turbine | GT | 16 | 14 | May 1966 | Operating | — | coming soon |
| 4 | Natural Gas Fired Combustion Turbine | GT | 16 | 14 | May 1966 | Operating | — | coming soon |
| 5 | Natural Gas Fired Combustion Turbine | GT | 16 | 14.2 | Oct 1967 | Operating | — | coming soon |
| 6 | Natural Gas Fired Combustion Turbine | GT | 16 | 14.2 | Oct 1967 | Operating | — | coming soon |
| 7 | Natural Gas Fired Combustion Turbine | GT | 16 | 14.2 | Apr 1968 | Operating | — | coming soon |
| 8 | Natural Gas Fired Combustion Turbine | GT | 16 | 14.2 | Apr 1968 | Operating | — | coming soon |
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% | 128 MW |
Nearby plants
Within 80 km.
| Anderson Erickson | 2 MW | 3.8 km |
| Archer Daniels Midland Des Moines | 8 MW | 4.8 km |
| Des Moines Wastewater Reclamation Fac | 3 MW | 5.5 km |
| Greater Des Moines | 576 MW | 8.5 km |
| Pleasant Hill | 180 MW | 8.7 km |
| Sycamore (IA) | 158 MW | 10.3 km |