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23.3 MW Natural Gas operating in Custer, MT — Midcontinent Independent Transmission System Operator, Inc..
23.3 MW
Nameplate Capacity
1
Generators
unit
Natural Gas Fired Combustion Turbine
Technology
1972
Operating Since
Coordinates
46.4113, -105.7953
County
Custer, MT
| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Montana-Dakota Utilities Co | Montana-Dakota Utilities | — |
| Owner(s) | Montana-Dakota Utilities Co | small shareholder(s) | — |
| Status | Operating | — | — |
Miles City GT is a natural gas-fired combustion turbine power plant located in Custer County, Montana. The plant has a total capacity of 23.3 MW and consists of a single generator. It began operating in 1972. The plant is operated by Montana-Dakota Utilities Co., though ownership is attributed to small shareholder(s).
The plant operates within the Midcontinent Independent Transmission System Operator (MISO) balancing authority. In the most recent year of record, the plant generated 331 MWh of electricity, achieving a capacity factor of 0.2%. According to available data, the installed cost of the plant was $148.8 per kW. Miles City GT is ranked as the 6th largest of 7 power plants in Montana, and 1286th out of 1963 plants nationally.
Generated from EIA, GEM, and public data sources
ISO/RTO
MISO
Market
ISO/RTO Member
NERC Region
MRO — Midwest Reliability Organization
Balancing Authority
Midcontinent Independent Transmission System Operator, Inc.. (MISO)
Grid Voltage
57.0 kV
Regulatory Status
RE — Regulated
Entity Type
Investor-Owned Utility
Sector
Electric Utility
26 MWh
Latest Month
331 MWh
Annual Generation
0.2%
Capacity Factor
CO₂ Intensity
3328 lb/MWh
Low-utilization plant — per-MWh rate is dominated by startup/standby emissions; not directly comparable to baseload averages.
NOx
9 lb/MWh
SO₂
0.091 lb/MWh
CH₄
0.063 lb/MWh
N₂O
0.006 lb/MWh
Capacity Factor
0.1%
Annual Net Gen
0 GWh
CO₂eq
3331 lb/MWh
Subregion
MRO West
Gas turbine · MDU Resources Group, Inc. · Data from 2015–2024
$221/kW
Installed Cost
$0/kW
Annual CapEx
$395.2/MWh
Operating Cost
Annual Capital & Operating Expenses
Cumulative Installed Cost
Per-Unit Cost Trends
Market Position
ISO/RTO Market
MISO
LMP Node
MDU.MCTURB1
Pricing Hub
MINN.HUB
Location Type
Generation Node
Node Source
EIA-860 direct report
Last updated 2026-03-26
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