Painted Hills
Riverside County, California · EIA plant ID 50533 · Operator: Terra-Gen Operating Co LLC
Nameplate47MWSummer 47 MW
Generators1in service
Net generation161GWh12 mo to Aug 2026
Capacity factor39%wind units, summer MW
Heat rate—thermal plants only
First online2021
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) |
|---|---|---|---|
| 2001 | 34.1 | 20.4% | — |
| 2002 | 40.1 | 24.0% | — |
| 2003 | 31.5 | 18.8% | — |
| 2004 | 28.2 | 16.9% | — |
| 2005 | 34.5 | 20.7% | — |
| 2006 | 34.7 | 20.8% | — |
| 2007 | 37.1 | 22.3% | — |
| 2008 | 33.6 | 20.1% | — |
| 2009 | 36.3 | 21.8% | — |
| 2010 | 34.7 | 20.9% | — |
| 2011 | 37.9 | 22.8% | — |
| 2012 | 30.5 | 18.3% | — |
| 2013 | 32.4 | 19.5% | — |
| 2014 | 32.3 | 19.4% | — |
| 2015 | 31.8 | 19.1% | — |
| 2016 | 32.8 | 19.7% | — |
| 2017 | 31.8 | 19.1% | — |
| 2018 | 29.9 | 18.0% | — |
| 2019 | 30.9 | 22.3% | — |
| 2021 | 117.7 | 38.1% | — |
| 2022 | 140.4 | 34.3% | — |
| 2023 | 177.3 | 43.2% | — |
| 2024 | 175.4 | 42.7% | — |
| 2025 | 168.2 | 41.0% | — |
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 |
|---|---|---|---|---|---|---|---|---|
| PHW | Onshore Wind Turbine | WT | 46.8 | 46.8 | Apr 2021 | Operating | — | vestas V112-3.45 |
| WGNS | Onshore Wind Turbine | WT | 19 | 19 | Nov 1985 | Retired Nov 2019 | — | vestas V17-75 |
Owner / operator
Operator: Terra-Gen Operating Co LLC. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Terra-Gen Operating Co LLC | 100.0% | 47 MW |
Nearby plants
Within 80 km.
| San Gorgonio Farms Wind Farm | 31 MW | 1.2 km |
| Whitewater Hill Wind Partners | 62 MW | 1.3 km |
| Whitewater Hydro Plant | 1 MW | 2.1 km |
| North Palm Springs 1A | 3 MW | 2.7 km |
| Mountain View III | 22 MW | 3.5 km |
| San Gorgonio Westwinds II LLC | 43 MW | 3.7 km |