Knoxville Battery Energy Storage
Battery storage project in Marion County, Iowa. 1.1 MW of nameplate capacity across 1 generator, operated by MidAmerican Energy Co.
Also known as EIA plant 62569
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 1.1 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2018First generator online
- Operator
- MidAmerican Energy CoEIA operator ID 12341
- Grid
- MISOBalancing authority MISO
- Price nodes
- None linkedNo verified ISO node
- Location
- Marion County, IA41.3160, −93.0610
- EIA plant ID
- 62569EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Knoxville Battery Energy Storage produces
Free · EIA-923Net generation, 2025
−24 MWh
−24 MWh, final
Battery discharge, 2025
0 MWh
Charge 24 MWh
January to July 2026
Not reported
Provisional. 0 of 7 months reported
Range, 2019 to 2025
−94.0–−24.0
MWh a year. Low 2019, high 2025
| Year | Net generation, MWh | Capacity factor | Months reported |
|---|---|---|---|
| 2000 | Not reported | Not reported | 0 of 12 |
| 2001 | Not reported | Not reported | 0 of 12 |
| 2002 | Not reported | Not reported | 0 of 12 |
| 2003 | Not reported | Not reported | 0 of 12 |
| 2004 | Not reported | Not reported | 0 of 12 |
| 2005 | Not reported | Not reported | 0 of 12 |
| 2006 | Not reported | Not reported | 0 of 12 |
| 2007 | Not reported | Not reported | 0 of 12 |
| 2008 | Not reported | Not reported | 0 of 12 |
| 2009 | Not reported | Not reported | 0 of 12 |
| 2010 | Not reported | Not reported | 0 of 12 |
| 2011 | Not reported | Not reported | 0 of 12 |
| 2012 | Not reported | Not reported | 0 of 12 |
| 2013 | Not reported | Not reported | 0 of 12 |
| 2014 | Not reported | Not reported | 0 of 12 |
| 2015 | Not reported | Not reported | 0 of 12 |
| 2016 | Not reported | Not reported | 0 of 12 |
| 2017 | Not reported | Not reported | 0 of 12 |
| 2018 | 0 | Not reported | 1 of 12 |
| 2019 | −94 | Not reported | 12 of 12 |
| 2020 | −59 | Not reported | 12 of 12 |
| 2021 | −63 | Not reported | 12 of 12 |
| 2022 | −49 | Not reported | 12 of 12 |
| 2023 | −32 | Not reported | 12 of 12 |
| 2024 | −25 | Not reported | 12 of 12 |
| 2025 | −24 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | Not reported | Not reported | 0 of 7 |
* 2026 covers January to July and is provisional. Battery plants can report negative net generation, when charging uses more energy than they discharge.
Power prices and basis
Free accountNo verified ISO price node is linked to this plant, or its price history could not load.
Emissions
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. Plants without steam cooling, such as wind, solar and batteries, do not report cooling water.
Generators
Free · EIA-860M| Generator | Technology | Nameplate MW | Online since |
|---|---|---|---|
| ES1 | Batteries | 1.1 | December 2018 |
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 MidAmerican Energy Co as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
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Power plants near Knoxville Battery Energy Storage
More plants operated by MidAmerican Energy Co
Questions about Knoxville Battery Energy Storage
How much power does Knoxville Battery Energy Storage produce?
Knoxville Battery Energy Storage reported −24 MWh (−24 MWh) of net generation in 2025.
Where is Knoxville Battery Energy Storage?
Knoxville Battery Energy Storage is in Marion County, Iowa, at 41.3160, −93.0610. It is in the Midcontinent Independent Transmission System Operator, Inc.. balancing area (MISO).
Who operates Knoxville Battery Energy Storage?
EIA-860M for August 2026 lists MidAmerican Energy Co as the operator (EIA operator ID 12341). The operator is not always the owner.
When did Knoxville Battery Energy Storage start operating?
Its first generator began operating in December 2018, according to EIA-860M.
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)
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page