Indigo Energy Facility
Riverside County, California · EIA plant ID 55541 · Operator: Diamond Generating Corporation
Nameplate150MWSummer 143 MW
Generators3in service
Net generation6GWh12 mo to Dec 2025
Capacity factor1%gas/coal/oil units, summer MW
Heat rate10,659Btu/kWhfossil units, electric fuel, HHV
First online2001Runs 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) |
|---|---|---|---|
| 2002 | 84.1 | 6.4% | 10,095 |
| 2003 | 69.3 | 5.3% | 9,896 |
| 2004 | 75.6 | 5.8% | 10,006 |
| 2005 | 55.7 | 4.3% | 10,160 |
| 2006 | 52.1 | 4.0% | 10,300 |
| 2007 | 81.2 | 6.2% | 11,344 |
| 2008 | 117 | 8.9% | 11,240 |
| 2009 | 67.5 | 5.1% | 10,200 |
| 2010 | 63.6 | 4.9% | 10,419 |
| 2011 | 40.4 | 3.1% | 10,587 |
| 2012 | 63.4 | 4.8% | 10,445 |
| 2013 | 83.4 | 6.7% | 10,594 |
| 2014 | 68 | 5.5% | 10,266 |
| 2015 | 64.4 | 5.2% | 10,220 |
| 2016 | 34.5 | 2.8% | 10,559 |
| 2017 | 69.7 | 5.6% | 10,665 |
| 2018 | 33.4 | 2.7% | 10,734 |
| 2019 | 34.1 | 2.7% | — |
| 2020 | 40.6 | 3.3% | 10,744 |
| 2021 | 32.2 | 2.6% | 10,882 |
| 2022 | 42.5 | 3.4% | 8,353 |
| 2023 | 26.2 | 2.1% | 10,466 |
| 2024 | 24.6 | 2.0% | 10,953 |
| 2025 | 6.2 | 0.5% | 10,659 |
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 |
|---|---|---|---|---|---|---|---|---|
| CTG1 | Natural Gas Fired Combustion Turbine | GT | 49.9 | 46.7 | Jul 2001 | Operating | — | coming soon |
| CTG2 | Natural Gas Fired Combustion Turbine | GT | 49.9 | 47.6 | Jul 2001 | Operating | — | coming soon |
| CTG3 | Natural Gas Fired Combustion Turbine | GT | 49.9 | 48.2 | Aug 2001 | Operating | — | coming soon |
Owner / operator
Operator: Diamond Generating Corporation. Ownership shares by in-service nameplate MW (EIA-860 Schedule 4; units not listed there are wholly owned by the operator).
| Diamond Generating Corporation | 100.0% | 150 MW |
Nearby plants
Within 80 km.
| Wagner Wind LLC | 6 MW | 0.3 km |
| Altech III | retired | 0.5 km |
| Phoenix Wind Power LLC | 2 MW | 0.7 km |
| North Palm Springs 4A | 4 MW | 0.9 km |
| Karen Avenue Wind Farm | 12 MW | 1.5 km |
| Mountain View I&2 | 71 MW | 1.5 km |