Mountain Wind Power II LLC
Uinta County, Wyoming · EIA plant ID 56753 · Operator: mountain wind power ii llc
Nameplate80MWSummer 80 MW
Generators1in service
Net generation191GWh12 mo to Aug 2026
Capacity factor27%wind units, summer MW
Heat rate—thermal plants only
First online2008
The 12-month figures include preliminary EIA-923 months, which EIA revises. Final data runs through Dec 2025.
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), wind 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.
Heat rate applies to fuel-burning (thermal) units only.
Annual data table
| Year | Net GWh | Capacity factor | Heat rate (Btu/kWh) |
|---|---|---|---|
| 2008 | 54.2 | 23.2% | — |
| 2009 | 202.8 | 28.9% | — |
| 2010 | 202.1 | 28.8% | — |
| 2011 | 240.8 | 34.4% | — |
| 2012 | 227.8 | 32.4% | — |
| 2013 | 227.9 | 32.5% | — |
| 2014 | 255.8 | 36.5% | — |
| 2015 | 183.1 | 26.1% | — |
| 2016 | 211.3 | 30.1% | — |
| 2017 | 216.9 | 30.9% | — |
| 2018 | 5.7 | 0.8% | — |
| 2019 | 198.9 | 28.4% | — |
| 2020 | 156.3 | 22.2% | — |
| 2021 | 160.5 | 22.9% | — |
| 2022 | 144.3 | 20.6% | — |
| 2023 | 140.8 | 20.1% | — |
| 2024 | 170.1 | 24.2% | — |
| 2025 | 187.8 | 26.8% | — |
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 | Onshore Wind Turbine | WT | 80 | 80 | Sep 2008 | Operating | — | suzlon S88-2100 |
Owner / operator
Operator: mountain wind power ii llc. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Edison Mission Energy | 80.1% | 64 MW |
| NRG Energy, Inc | 19.9% | 16 MW |
Nearby plants
Within 80 km.
| TransAlta Wyoming Wind | 144 MW | 2.8 km |
| Mountain Wind Power LLC | 61 MW | 6 km |
| Kemmerer Unit 1 | — | 49.2 km |
| Naughton | 707 MW | 55.1 km |
| Sage Solar I-III | 58 MW | 70.8 km |
| Genesis Alkali | 41 MW | 72.9 km |