115.7 MW Sub. Coal operating in Big Horn, MT — NorthWestern Energy (NWMT)
115.7 MW
Nameplate Capacity
1
Generators
unit
Conventional Steam Coal
Technology
2006
Operating Since
Coordinates
45.7578, -107.6000
County
Big Horn, MT
Nearby Plants
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Heorot Power Management | Heorot Power Management | — |
| Owner(s) | Heorot Power Management | Heorot Power Management | — |
| Status | Operating | — | — |
The Hardin Generating Project is a 115.7 MW coal-fired power plant located in Big Horn County, Montana. The plant began operating in 2006 and has one generator utilizing conventional steam coal technology. It is owned and operated by Heorot Power Management. The plant's primary fuel source is subbituminous coal (SUB).
In the most recent year of data, the Hardin Generating Project produced 481,001 MWh of electricity, achieving a capacity factor of 47.4%. The plant operates within the NorthWestern Energy (NWMT) balancing authority and is part of the Western Electricity Coordinating Council (WECC) NERC region. The Hardin Generating Project is the second-largest coal plant in Montana, and ranks 74th out of 75 coal plants nationally.
Generated from EIA, GEM, and public data sources
NERC Region
WECC
Balancing Authority
NorthWestern Energy (NWMT)
Grid Voltage
115 kV
Regulatory Status
NR
Entity Type
Independent Power Producer
Sector
IPP Non-CHP
49.7K MWh
Latest Month
481.0K MWh
Annual Generation
47.4%
Capacity Factor
No financial data available for this plant.
This plant is outside organized wholesale electricity markets (ISOs/RTOs). Nodal pricing data is not available.
Last updated 2026-03-14
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