Rock River I LLCRetired
Carbon County, Wyoming · EIA plant ID 55740 · Operator: Shell Wind Energy Inc.
×50 MW wind retired since 2020 (latest Nov 2022)
Nameplate—MWSummer — MW
Generators0in service
Net generation—GWh12 mo
Capacity factor—no 923 generation in the last 12 months
Heat rate—thermal plants only
First online—
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), primary-fuel 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) |
|---|---|---|---|
| 2001 | 64.7 | 58.6% | — |
| 2002 | 141.4 | 32.3% | — |
| 2003 | 154.7 | 35.3% | — |
| 2004 | 144.8 | 33.0% | — |
| 2005 | 141.2 | 32.2% | — |
| 2006 | 142.1 | 32.5% | — |
| 2007 | 140.9 | 32.2% | — |
| 2008 | 157 | 35.7% | — |
| 2009 | 134.8 | 30.8% | — |
| 2010 | 138.2 | 31.6% | — |
| 2011 | 136.1 | 31.1% | — |
| 2012 | 135.1 | 30.8% | — |
| 2013 | 142.8 | 32.6% | — |
| 2014 | 151.2 | 34.5% | — |
| 2015 | 117.7 | 26.9% | — |
| 2016 | 145.9 | 33.2% | — |
| 2017 | 147.6 | 33.7% | — |
| 2018 | 138.7 | 31.7% | — |
| 2019 | 136.2 | 31.1% | — |
| 2020 | 151.2 | 34.4% | — |
| 2021 | 107.3 | 24.5% | — |
| 2022 | 0 | 0.0% | — |
| 2023 | 0 | — | — |
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 |
|---|---|---|---|---|---|---|---|---|
| GEN1 | Onshore Wind Turbine | WT | 50 | 50 | Oct 2001 | Retired Nov 2022 | — | mitsubishi MWT-1000 |
Owner / operator
Operator: Shell Wind Energy Inc.. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
Nearby plants
Within 80 km.
| Foote Creek IV | retired | 7.7 km |
| Foote Creek III | retired | 8.4 km |
| High Plains | 122 MW | 9.3 km |
| Foote Creek II | retired | 9.5 km |
| McFadden Ridge | 35 MW | 9.8 km |
| Foote Creek Rim | 135 MW | 12.6 km |