Rolling Hills
Converse County, Wyoming · EIA plant ID 56842 · Operator: PacifiCorp
Nameplate116MWSummer 99 MW
Generators1in service
Net generation295GWh12 mo to Dec 2025
Capacity factor34%wind units, summer MW
Heat rate—thermal plants only
First online2009
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) |
|---|---|---|---|
| 2009 | 206.2 | 23.8% | — |
| 2010 | 252.7 | 29.1% | — |
| 2011 | 309.2 | 35.6% | — |
| 2012 | 292 | 33.6% | — |
| 2013 | 294.8 | 34.0% | — |
| 2014 | 271.1 | 31.3% | — |
| 2015 | 261.3 | 30.1% | — |
| 2016 | 284.2 | 32.7% | — |
| 2017 | 237 | 27.3% | — |
| 2018 | 277.8 | 32.0% | — |
| 2019 | 267.5 | 30.9% | — |
| 2020 | 363.2 | 41.8% | — |
| 2021 | 296.6 | 34.2% | — |
| 2022 | 286.4 | 33.0% | — |
| 2023 | 187.8 | 21.6% | — |
| 2024 | 244.8 | 28.1% | — |
| 2025 | 295.1 | 34.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| 1 | Onshore Wind Turbine | WT | 115.8 | 99 | Jan 2009 | Operating | — | ge 1.85-87 |
Owner / operator
Operator: PacifiCorp. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| PacifiCorp | 100.0% | 116 MW |
Nearby plants
Within 80 km.
| Glenrock | 166 MW | 4.6 km |
| Cedar Springs Wind IV | 390 MW | 12.6 km |
| Campbell Hill Windpower | 99 MW | 12.7 km |
| Top of the World Windpower Project | 200 MW | 15.6 km |
| Dutchman Solar generation and BESS | — | 20.8 km |
| Cedar Springs III | 133 MW | 22 km |