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3.9 MW Landfill Gas operating in Cassia, ID
3.9 MW
Nameplate Capacity
3
Generators
units
Landfill Gas
Technology
2018
Operating Since
Coordinates
42.4669, -114.0046
County
Cassia, ID
Nearby Plants
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| Field | EIA | GEM | Wikidata |
|---|---|---|---|
| Operator | Southern Idaho Solid Waste | — | — |
| Owner(s) | Southern Idaho Solid Waste | — | — |
| Status | Operating | — | — |
Milner Butte LFGE is a 3.9 MW landfill gas-fueled power plant located in Cassia County, Idaho. The facility is owned and operated by Southern Idaho Solid Waste. It began commercial operation in 2018 and consists of three generators utilizing landfill gas technology. The plant is interconnected to the Idaho Power Company balancing authority within the Western Electricity Coordinating Council (WECC) NERC region.
In its latest year of operation, Milner Butte LFGE generated 24,131 MWh of electricity, achieving a capacity factor of 70.4%. Among landfill gas power plants in Idaho, it ranks as the largest of four such facilities in the state. Nationally, it is ranked 153 out of 284 landfill gas plants.
Generated from EIA, GEM, and public data sources
Grid Region
Mountain West
Market
WEIM Participant
NERC Region
WECC — Western Electricity Coordinating Council
Balancing Authority
Idaho Power Company (IPCO)
Grid Voltage
35.5 kV
Regulatory Status
RE — Regulated
Entity Type
Political Subdivision
Sector
Commercial Non-CHP
Monthly net generation as reported to EIA-923 — useful for historical context. Confidence varies sharply by fuel type; the band above and the “About this data” button explain the caveats specific to this plant and how InfraSure’s in-house model handles them.
2.0K MWh
Latest Month
24.1K MWh
Annual Generation
70.4%
Capacity Factor
Forward-looking generation outlook with probabilistic ranges across weather, demand, and policy scenarios. Powered by InfraSure's generation modeling stack.
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CO₂ Intensity
0 lb/MWh
NOx
0.000 lb/MWh
SO₂
0.390 lb/MWh
CH₄
0.000 lb/MWh
N₂O
0.000 lb/MWh
Capacity Factor
53.9%
Annual Net Gen
18 GWh
CO₂eq
0.000 lb/MWh
Subregion
WECC Northwest
2018
$4,116/kW
Est. Construction Cost
Total estimated cost: $16.1M
Forward revenue, DSCR bands, and refinancing risk projected under price, demand, and policy scenarios. Powered by InfraSure's asset cashflow stack.
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This plant's balancing authority participates in CAISO's Western Energy Imbalance Market (WEIM). Direct nodal pricing data is not yet available.
No wholesale contracts disclosed in FERC EQR for this plant.
FERC EQR captures bilateral wholesale energy + capacity contracts ≥$1M/yr filed quarterly by jurisdictional sellers — covers renewable PPAs, thermal energy sales agreements, capacity contracts, and tolling agreements alike. Many plants don't appear: regulated-utility output flows to ratepayers via cost-of-service rather than bilateral contracts; small projects fall below the filing threshold; tax-equity-financed renewables route offtake to investors not utilities; merchant plants sell into ISO clearing markets without bilateral contracts. News-extracted buyer facts (below) may surface contracts disclosed only through announcements.
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