Lake (WY)
Teton County, Wyoming · EIA plant ID 7039 · Operator: NorthWestern Energy DGGS
Nameplate3MWSummer 3 MW
Generators1in service
Net generation0GWh12 mo to Dec 2025
Capacity factor0%gas/coal/oil units, summer MW
Heat rate11,969Btu/kWhfossil units, electric fuel, HHV
First online1967Runs as rarely runs
Monthly net generation
EIA-923, all units at the plant. Net of station use; storage can go negative.
FinalPreliminary
Capacity factor by year
Net MWh ÷ (summer MW × hours), gas/coal/oil units. Each year uses that year's EIA-860 ratings; the hollow dot is the latest 12 months.
Heat rate by year
Electric fuel MMBtu × 1000 ÷ net MWh (Btu/kWh, HHV), fossil units only; CT + CA counted as one combined-cycle block.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2001 | 0.7 | 2.8% | 11,665 |
| 2002 | 0.7 | 2.8% | 11,592 |
| 2003 | 0.3 | 1.2% | 12,158 |
| 2004 | 0 | 0.0% | — |
| 2006 | 0.1 | 0.4% | 15,875 |
| 2007 | 0.2 | 0.9% | 9,962 |
| 2008 | 0.2 | 1.0% | 9,983 |
| 2009 | 0.1 | 0.4% | 10,024 |
| 2010 | 0.2 | 0.8% | 10,215 |
| 2011 | 0.2 | 0.7% | 10,032 |
| 2012 | 0.3 | 1.1% | 10,486 |
| 2013 | 0 | 0.0% | — |
| 2014 | 0.1 | 0.4% | 10,506 |
| 2015 | 0.2 | 0.9% | 9,898 |
| 2016 | 0.1 | 0.4% | 10,489 |
| 2017 | 0.3 | 1.2% | 11,137 |
| 2018 | 0 | 0.2% | 10,395 |
| 2019 | 0.1 | 0.6% | 11,973 |
| 2020 | 0.1 | 0.4% | 13,350 |
| 2021 | 0.3 | 1.4% | 12,216 |
| 2022 | 0.2 | 0.9% | 12,558 |
| 2023 | 0.3 | 1.1% | 11,127 |
| 2024 | 0.5 | 2.2% | 10,856 |
| 2025 | 0.1 | 0.4% | 11,969 |
Generators
EIA-860 (annual) with EIA-860M updates through Sep 2026. EIA-923 reports generation by plant, prime mover and fuel, not by unit, so unit-level output isn't shown.
| Gen ID | Technology | Prime mover | Nameplate MW | Summer MW | Online | Status | Planned retirement | OEM / model |
|---|---|---|---|---|---|---|---|---|
| 1 | Petroleum Liquids | IC | 2.7 | 2.7 | Sep 1967 | Operating (Standby / backup) | — | coming soon |
Owner / operator
Operator: NorthWestern Energy DGGS. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| NorthWestern Energy DGGS | 100.0% | 3 MW |
Nearby plants
Within 80 km.
| Old Faithful | 2 MW | 21.1 km |
| Island Park | 5 MW | 65.3 km |
| Falls River Hydro | 9 MW | 73.6 km |
| Felt | 7 MW | 79.4 km |