gridprims

Power plant · EIA plant code 50931

Yellowstone Energy LP

Operator
Yellowstone Energy LP
Location
Yellowstone, MT (county level only)
Balancing authority
NorthWestern Energy (NWMT) (NWMT)
Nameplate capacity
68 MW
Summer capacity
52 MW

U.S. Energy Information Administration · Annual Electric Generator Report (Form EIA-860) · data for 2025 · as of Sep 10, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0

Generation in 2025

Net generation
458,357 MWh
Capacity factor
76.9%

Capacity factor is net generation divided by nameplate capacity times the hours each generator was in service that year, counted by month.

U.S. Energy Information Administration · Power Plant Operations Report (Form EIA-923) · data for 2025 · as of Sep 11, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0

Emissions

Carbon dioxide in 2023
409,657 metric tons
Carbon dioxide per MWh
1,840 lb/MWh

eGRID reports 451,570 short tons. One short ton is 0.90718474 metric tons.

Emissions are for 2023, the newest eGRID year. Generation is for 2025, the newest EIA-923 year.

U.S. Environmental Protection Agency · Emissions & Generation Resource Integrated Database (eGRID) · data for 2023 · as of Jun 16, 2025 · retrieved Oct 31, 2026 · CC-BY-4.0

Generators

Generators at Yellowstone Energy LP
GeneratorTechnologyEnergy sourceNameplateOperating sinceStatus
GEN1Petroleum CokePC68 MW1995Operable · As of September 2026 (EIA-860M): (OP) Operating

U.S. Energy Information Administration · Monthly Update to the Annual Electric Generator Report (Form EIA-860M) · data for 2026-09 · as of Oct 23, 2026 · retrieved Oct 31, 2026 · CC-BY-4.0

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