Sumner
Oil power plant in Bremer County, Iowa. 5.4 MW of nameplate capacity across 3 generators, operated by City of Sumner - (IA).
Also known as EIA plant 1191
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 5.4 MWNameplate
- Generators
- 3 operatingEIA-860M, August 2026
- Operating since
- February 2021First generator online
- Operator
- City of Sumner - (IA)EIA operator ID 18301
- Grid
- MISOBalancing authority MISO
- Price nodes
- 1 SPP nodeResource nodes with prices
- Location
- Bremer County, IA42.8464, −92.0978
- EIA plant ID
- 1191EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Sumner produces
Free · EIA-923Net generation, 2025
55 MWh
55 MWh, final
Capacity factor, 2025
0.1%
2024: 0.4%
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2015 to 2025
28.0–655.0
MWh a year. Low 2020, high 2023
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | 0 | Not reported | 12 of 12 |
| 2001 | 250 | Not reported | 12 of 12 |
| 2002 | 66 | Not reported | 12 of 12 |
| 2003 | 244 | Not reported | 12 of 12 |
| 2004 | 104 | Not reported | 12 of 12 |
| 2005 | 32 | Not reported | 12 of 12 |
| 2006 | 54 | Not reported | 12 of 12 |
| 2007 | 193 | Not reported | 12 of 12 |
| 2008 | 23 | Not reported | 12 of 12 |
| 2009 | 25 | Not reported | 12 of 12 |
| 2010 | 22 | 0.0% | 12 of 12 |
| 2011 | 40 | 0.1% | 12 of 12 |
| 2012 | 13 | 0.0% | 12 of 12 |
| 2013 | 46 | Not reported | 12 of 12 |
| 2014 | 26 | 0.1% | 12 of 12 |
| 2015 | 39 | 0.1% | 12 of 12 |
| 2016 | 66 | 0.1% | 12 of 12 |
| 2017 | 35 | 0.1% | 12 of 12 |
| 2018 | 74 | 0.2% | 12 of 12 |
| 2019 | 144 | 0.3% | 12 of 12 |
| 2020 | 28 | 0.1% | 12 of 12 |
| 2021 | 498 | Not reported | 12 of 12 |
| 2022 | 275 | 0.6% | 12 of 12 |
| 2023 | 655 | 1.4% | 12 of 12 |
| 2024 | 175 | 0.4% | 12 of 12 |
| 2025 | 55 | 0.1% | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Capacity factor is net generation divided by nameplate capacity times the hours of each reported month.
Power prices and basis
Free account · SPPEmissions
Free · EPA CAMPDNo EPA emissions units are linked to this plant.
Water use
Free · EIA-923 cooling, USGSNo EIA cooling-water record for this plant in 2024.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| G1 | Petroleum Liquids | 1.8 | February 2021 |
| G2 | Petroleum Liquids | 1.8 | February 2021 |
| G3 | Petroleum Liquids | 1.8 | February 2021 |
Ownership and offtake
ProOwnership and offtake are part of Pro
Owners and their shares, parent companies, and power purchase agreements with their buyers. EIA-860M lists City of Sumner - (IA) as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Generation potential vs reported
Monthly potential at seasonal net capability, next to EIA-923 output. Shows how much of the plant's capability was used.
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Questions about Sumner
How much power does Sumner produce?
Sumner reported 55 MWh (55 MWh) of net generation in 2025, a 0.1% capacity factor on 5.4 MW of nameplate capacity.
Where is Sumner?
Sumner is in Bremer County, Iowa, at 42.8464, −92.0978. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Sumner?
EIA-860M for August 2026 lists City of Sumner - (IA) as the operator (EIA operator ID 18301). The operator is not always the owner.
When did Sumner start operating?
Its first generator began operating in February 2021, according to EIA-860M.
Does InfraMap have power prices for Sumner?
Yes. InfraMap has SPP day-ahead and real-time prices at 1 price node linked to Sumner, with the hub price and node-to-hub basis. Prices are free with an InfraMap account; pricing node names are part of InfraMap Pro.
Sources
- EIA-860 2025 (final) and EIA-860M August 2026: plant, generators, capacity, operator and location
- EIA-923 monthly net generation, 2000 to July 2026 (2026 provisional)
- SPP day-ahead and real-time prices; node and hub assignments as of 2026-10-05
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page