NaturEner Rim Rock Energy — Plant Summary
- EIA Plant ID
- 57995
- Capacity
- 189 MW
- Primary Fuel
- Wind
- Technology
- Onshore Wind Turbine
- Status
- Operating
- Location
- Toole, MT
- Operating Since
- 2012
- Generators
- 1
- Operator
- NaturEner Rim Rock Energy LLC
- Parent Company
- —
- Annual Generation
- 525,495 MWh
- Capacity Factor
- 31.7%
- Balancing Authority
- NaturEner Wind Watch, LLC
- ISO/RTO
- —
- NERC Region
- WECC
NaturEner Rim Rock Energy
OperatingWind
Ranked #6 of 25 Wind plants in MT#387 of 1442 nationally
189 MW Wind operating in Toole, MT — NaturEner Wind Watch, LLC
EIAGEMWD
189 MW
Nameplate Capacity
1
Generators
unit
Onshore Wind Turbine
Technology
2012
Operating Since
Location
Coordinates
48.8203, -112.1033
County
Toole, MT
Ownership & Operator
Owner data does not fully agree across sources.
EIA typically reports the operating utility, while GEM resolves to the financial owner or parent corporation. Both can be correct.
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | NaturEner Rim Rock Energy LLC | Acciona | — |
| Owner(s) | NaturEner Rim Rock Energy LLC | NaturEner [100%] | — |
| Status | Operating | operating | — |
Ownership Chain
GEM identifies the owner as NaturEner [100%]
This entity is not yet in the GEM ownership database — chain unavailable.
About
Rim Rock Wind Farm is located near Cut Bank, Montana. Owned by NaturEner, this $370 million, 189 megawatt (MW) wind farm has been operational since 2012, and is Montana's largest wind-producing facility to be built in a single phase.
Read more on WikipediaNaturEner Rim Rock Energy is a 189 MW wind power plant located in Toole County, Montana. The plant began operating in 2012 and is owned and operated by NaturEner Rim Rock Energy LLC. It utilizes a single generator consisting of onshore wind turbine technology. The facility ranks as the 6th largest of 11 wind plants in Montana, and 381st nationally out of 734 wind plants.
The plant's turbines are manufactured by Acciona, model AW77/1500, with a rotor diameter of 77 meters and a hub height of 80 meters. In the most recent year of data, the plant generated 525,495 MWh of electricity, achieving a capacity factor of 31.7%. The balancing authority for the plant is NaturEner Wind Watch, LLC, and it is located within the WECC NERC region.
Generated from EIA, GEM, and public data sources
Engineering & Generators
Grid Context
NERC Region
WECC
Balancing Authority
NaturEner Wind Watch, LLC
Grid Voltage
230 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
Generation
66.6K MWh
Latest Month
525.5K MWh
Annual Generation
31.7%
Capacity Factor
Jan 2023 – Dec 2025
Financial Data
No financial data available for this plant.
Pricing & Market Data
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
News & Articles (5)Beta
Deals·ppa
Berkshire Hathaway Energy plans to buy 399 MW of Montana wind from NaturEner
Berkshire Hathaway Energy, or BHE, plans to buy from NaturEner USA almost 400 MW of wind generation in Montana, according to an application filed Tuesday.
Berkshire Hathaway Energy (buyer)NaturEner (seller)
Utility Dive·3 years ago
Industry·technology
When wind is the firmest thing
As officials debate the meaning of "baseload," two wind operators in the Pacific Northwest are demonstrating how wind power can be as...
E&E News by POLITICO·8 years ago
General
SDG&E sued over Montana wind contract
Dive Brief: NaturEner, a privately held wind developer, and San Diego Gas & Electric (SDG&E) have sued each other for breaching contracts...
Utility Dive·12 years ago
Industry·corporate
Rim Rock Wind Farm, Montana
Rim Rock Wind Farm is a 189MW renewable power project located in the US state of Montana. The $400m project is owned by NaturEner and is the single largest-...
NaturEner (operator)
Power Technology·12 years ago
Last updated 2026-03-26
View all 5 articles