Sumner
Bremer County, Iowa · EIA plant ID 1191 · Operator: City of Sumner - (IA)
×6 MW oil retired since 2020 (latest Feb 2021)
Nameplate5MWSummer 5 MW
Generators3in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate10,782Btu/kWhfossil units, electric fuel, HHV
First online2021Runs 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 | 0.3 | 0.5% | 9,632 |
| 2002 | 0.1 | 0.1% | 8,925 |
| 2003 | 0.2 | 0.5% | 9,152 |
| 2004 | 0.1 | 0.2% | 10,154 |
| 2005 | 0 | 0.1% | 9,109 |
| 2006 | 0.1 | 0.1% | 9,666 |
| 2007 | 0.2 | 0.4% | 9,990 |
| 2008 | 0 | 0.1% | 11,565 |
| 2009 | 0 | 0.1% | 12,760 |
| 2010 | 0 | 0.1% | 11,273 |
| 2011 | 0 | 0.1% | 6,525 |
| 2012 | 0 | 0.0% | 12,308 |
| 2013 | 0 | 0.1% | 11,007 |
| 2014 | 0 | 0.1% | 13,077 |
| 2015 | 0 | 0.1% | 11,308 |
| 2016 | 0.1 | 0.1% | 7,712 |
| 2017 | 0 | 0.1% | 13,457 |
| 2018 | 0.1 | 0.1% | 14,500 |
| 2019 | 0.1 | 0.3% | 10,632 |
| 2020 | 0 | 0.1% | 11,143 |
| 2021 | 0.5 | 1.1% | 11,104 |
| 2022 | 0.3 | 0.6% | 10,869 |
| 2023 | 0.7 | 1.4% | 10,979 |
| 2024 | 0.2 | 0.4% | 10,343 |
| 2025 | 0.1 | 0.1% | 10,782 |
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 |
|---|---|---|---|---|---|---|---|---|
| G1 | Petroleum Liquids | IC | 1.8 | 1.8 | Feb 2021 | Operating | — | coming soon |
| G2 | Petroleum Liquids | IC | 1.8 | 1.8 | Feb 2021 | Operating | — | coming soon |
| G3 | Petroleum Liquids | IC | 1.8 | 1.8 | Feb 2021 | Operating | — | coming soon |
| 1 | Petroleum Liquids | IC | 2.6 | 2.6 | Dec 1972 | Retired Feb 2021 | — | coming soon |
| 2 | Petroleum Liquids | IC | 1.2 | 1.1 | Aug 1956 | Retired Feb 2021 | — | coming soon |
| 6 | Petroleum Liquids | IC | 1.8 | 1.8 | Sep 1999 | Retired Feb 2021 | — | coming soon |
Owner / operator
Operator: City of Sumner - (IA). Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| City of Sumner - (IA) | 100.0% | 5 MW |
Nearby plants
Within 80 km.
| Hawkeye Wind Farm | 35 MW | 11.8 km |
| New Hampton | 27 MW | 30.6 km |
| Waverly Community Wind Project | 3 MW | 33 km |
| South Plant | 12 MW | 33 km |
| Waverly Municipal Electric North Plant | 25 MW | 33 km |
| Waverly Solar - (IA) | 4 MW | 36.4 km |