INDIGO ENERGY FACILITY
OperatingNatural Gas power plant
- Capacity
- 150 MW
- Primary fuel
- Natural Gas
- County
- Riverside County
- Operator
- DIAMOND GENERATING CORPORATION
- Status
- Operating
- Commissioned
- 2001
- EIA plant ID
- 55541
- Generators
- 3
- Technology
- Natural Gas Fired Combustion Turbine
- Net generation (2024)
- 24.6 GWh
- Capacity factor (2024, EIA nameplate)
- 1.9%
- Data vintage
- EIA-860 2024 final; EIA-923 2022-2024 final
- Coordinates
- 33.9109, -116.5530
INDIGO ENERGY FACILITY, a 150 MW Natural Gas power plant in Riverside County, California. Operated by DIAMOND GENERATING CORPORATION, commissioned 2001.
How INDIGO ENERGY FACILITY compares
With 150 MW of capacity, INDIGO ENERGY FACILITY ranks 104th among the 874 operating power plants Bywatts maps in California and 52nd of the 190 operating Natural Gas plants in the state. It accounts for about 0.4% of California's operating Natural Gas capacity and 0.2% of all operating capacity in the state. Nationally it is the 608th-largest of the 1,185 operating Natural Gas plants in the database. Commissioned in 2001, it is older than 55% of the 859 operating California plants with a recorded commissioning year. Its operator, DIAMOND GENERATING CORPORATION, runs 3 operating plants in California totaling 450 MW. It shares Riverside County with 51 other operating plants, including CPV SENTINEL ENERGY PROJECT and BLYTHE ENERGY INC.
EIA-860 lists 3 generators at the site with 150 MW of nameplate capacity, all natural gas fired combustion turbine technology. Net generation was 24.6 GWh in 2024 (a 1.9% capacity factor).
Grid neighborhood
The nearest named substation is INDEGO, under 0.1 miles away; the closest transmission line found within 10 miles is a 115 kV line owned by AZUSA LIGHT & POWER, under 0.1 miles away. Another 25 operating power plants totaling 1,321 MW sit within 25 miles; the largest is CPV SENTINEL ENERGY PROJECT (800 MW, Natural Gas).
Computed by Bywatts from HIFLD power plant, substation and transmission line records and EIA-860/923 survey data; distances are straight-line. Sources and methodology
Weather peril exposure
INDIGO ENERGY FACILITY is a 150 MW natural gas power plant in Riverside County, CA, operated by DIAMOND GENERATING CORPORATION, commissioned in 2001. Riverside County carries elevated modeled catastrophe exposure in the FEMA National Risk Index, scoring 2.6 of 5 at the 40th national percentile. Wildfire is the leading peril, rated Very High by FEMA at the 100th percentile.
The Bywatts loss layer is calibrated to solar PV hardware, so it is not applied to a natural gas plant. The ratings below are the FEMA National Risk Index county hazard ratings for this location.
Riverside County hazard ratings
| Peril | FEMA rating | National percentile | Peril score | Events per year |
|---|---|---|---|---|
| Wildfire | Very High | 100th | 5.0 of 5 | 0.02 |
| Earthquake | Very High | 98th | 4.9 of 5 | 0.12 |
| Riverine flooding | Very High | 98th | 4.9 of 5 | 7.4 |
| Heat wave | Relatively High | 72nd | 3.9 of 5 | 13.8 |
| Hail | Relatively Moderate | 15th | 1.6 of 5 | 0.08 |
| Tornado | Relatively Moderate | 15th | 1.6 of 5 | 0.45 |
| Strong wind | Relatively Moderate | 2nd | 1.1 of 5 | 0.23 |
| Winter weather | Relatively Moderate | 0th | 1.0 of 5 | 2.4 |
| Lightning | Relatively Moderate | 0th | 1.0 of 5 | 13.8 |
| Hurricane | Very Low | 0th | 1.0 of 5 | 0.01 |
Perils not assessed in Riverside County
These perils carry no usable National Risk Index figure for this county, so they are excluded from the scoring rather than scored zero. A zero would claim the peril was assessed and found benign.
| Peril | Why it is not scored |
|---|---|
| Coastal flooding | FEMA rating is "Not Applicable" for this county |
| Ice storm | FEMA rating is "Not Applicable" for this county |
Model hail, wind and flood exposure for Riverside County in the weather risk calculator
Ratings are the FEMA National Risk Index county hazard ratings; the peril score is a Bywatts transform of the FEMA national percentile. Full data sources and the solar vulnerability methodology are in the weather risk calculator.
Modeled estimate for screening and negotiation. Built from FEMA National Risk Index county hazard data and a solar vulnerability layer documented above. Not a quote, a binder, or actuarial advice, and not a substitute for a carrier's own model. Hazard data: FEMA National Risk Index December 2025, synced 2026-07-24. Resolution is county level, not site level.