NaturEner Rim Rock Energy
Wind power plant in Toole County, Montana. 189 MW of nameplate capacity across 1 generator, operated by NaturEner Rim Rock Energy LLC.
Also known as Rim Rock · EIA plant 57995
Analyst: free account, 1 question a day.
Key facts
- Capacity
- 189 MWNameplate
- Generators
- 1 operatingEIA-860M, August 2026
- Operating since
- December 2012First generator online
- Operator
- NaturEner Rim Rock Energy LLCEIA operator ID 57370
- Grid
- WWABalancing authority WWA
- Price nodes
- None linkedNo verified ISO node
- Location
- Toole County, MT48.8203, −112.1033
- EIA plant ID
- 57995EIA plant page
Data as of EIA-860M August 2026 (published 2026-09-24). Capacity is nameplate, not live output.
How much power NaturEner Rim Rock Energy produces
Free · EIA-923Net generation, 2025
525 GWh
525,495 MWh, final
Capacity factor, 2025
31.7%
2024: 36.2%
January to July 2026
364 GWh
Provisional
Range, 2015 to 2025
525.5–705.6
GWh a year. Low 2025, high 2020
| 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 | 56,893 | Not reported | 2 of 12 |
| 2013 | 335,840 | 20.3% | 12 of 12 |
| 2014 | 562,316 | 34.0% | 12 of 12 |
| 2015 | 603,536 | 36.5% | 12 of 12 |
| 2016 | 652,904 | 39.3% | 12 of 12 |
| 2017 | 657,608 | 39.7% | 12 of 12 |
| 2018 | 628,130 | 37.9% | 12 of 12 |
| 2019 | 597,163 | 36.1% | 12 of 12 |
| 2020 | 705,585 | 42.5% | 12 of 12 |
| 2021 | 644,950 | 39.0% | 12 of 12 |
| 2022 | 675,505 | 40.8% | 12 of 12 |
| 2023 | 563,641 | 34.0% | 12 of 12 |
| 2024 | 600,534 | 36.2% | 12 of 12 |
| 2025 | 525,495 | 31.7% | 12 of 12 |
| 2026 (provisional, partial year) | 363,981 | 37.9% | 7 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 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 |
|---|---|---|---|
| RR | Onshore Wind Turbine | 189.0 | December 2012 |
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 NaturEner Rim Rock Energy LLC as the operator, which is not always the owner.
Modeled data
ProPro adds modeled values for this plant. Everything above stays free.
Modeled curtailment
A range, not one number. The lower bound counts hours inside the production tax credit window; the upper bound is the no-credit case.
Expected vs reported generation
Monthly modeled expected output and physical potential next to EIA-923 reported output.
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Questions about NaturEner Rim Rock Energy
How much power does NaturEner Rim Rock Energy produce?
NaturEner Rim Rock Energy reported 525,495 MWh (525 GWh) of net generation in 2025, a 31.7% capacity factor on 189 MW of nameplate capacity. From January to July 2026 it reported 364 GWh, which is provisional.
Where is NaturEner Rim Rock Energy?
NaturEner Rim Rock Energy is in Toole County, Montana, at 48.8203, −112.1033. It is in the NaturEner Wind Watch, LLC balancing area (WWA).
Who operates NaturEner Rim Rock Energy?
EIA-860M for August 2026 lists NaturEner Rim Rock Energy LLC as the operator (EIA operator ID 57370). The operator is not always the owner.
When did NaturEner Rim Rock Energy start operating?
Its first generator began operating in December 2012, 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)
- Project names from the USGS U.S. Wind Turbine Database
Page updated 2026-10-04 from the InfraMap data build. Methodology · Data sources · EIA plant page