Prairie Center Energy LLC
Battery storage project in Adams County, Colorado. 35.4 MW of nameplate capacity across 1 generator, operated by Whetstone Power Operations LLC.
Also known as EIA plant 68058
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 35.4 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2024First generator online
- Operator
- Whetstone Power Operations LLCEIA operator ID 66569
- Grid
- WACMBalancing authority WACM
- Price nodes
- 1 SPP nodeResource nodes with prices
- Location
- Adams County, CO39.9303, −104.7943
- EIA plant ID
- 68058EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power Prairie Center Energy produces
Free · EIA-923Net generation, 2025
−1.41 GWh
−1,406 MWh, final
Battery discharge, 2025
17.5 GWh
Charge 18.9 GWh
January to July 2026
−1.38 GWh
Provisional
| 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 | Not reported | Not reported | 0 of 12 |
| 2019 | Not reported | Not reported | 0 of 12 |
| 2020 | Not reported | Not reported | 0 of 12 |
| 2021 | Not reported | Not reported | 0 of 12 |
| 2022 | Not reported | Not reported | 0 of 12 |
| 2023 | Not reported | Not reported | 0 of 12 |
| 2024 | −256 | Not reported | 1 of 12 |
| 2025 | −1,406 | Not reported | 12 of 12 |
| 2026 (provisional, partial year) | −1,378 | Not reported | 7 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 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. 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 |
|---|---|---|---|
| PCEBS | Batteries | 35.4 | December 2024 |
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 Whetstone Power Operations LLC 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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Questions about Prairie Center Energy
How much power does Prairie Center Energy LLC produce?
Prairie Center Energy LLC reported −1,406 MWh (−1.41 GWh) of net generation in 2025. From January to July 2026 it reported −1.38 GWh, which is provisional.
Where is Prairie Center Energy LLC?
Prairie Center Energy LLC is in Adams County, Colorado, at 39.9303, −104.7943. It is in the Western Area Power Administration - Rocky Mountain Region balancing area (WACM).
Who operates Prairie Center Energy LLC?
EIA-860M for August 2026 lists Whetstone Power Operations LLC as the operator (EIA operator ID 66569). The operator is not always the owner.
When did Prairie Center Energy LLC start operating?
Its first generator began operating in December 2024, according to EIA-860M.
Does InfraMap have power prices for Prairie Center Energy LLC?
Yes. InfraMap has SPP day-ahead and real-time prices at 1 price node linked to Prairie Center Energy LLC, 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