California Independent System Operator (CAISO)
The California Independent System Operator runs the high-voltage grid and wholesale electricity market for most of California and a small part of Nevada. On the map, CAISO has 1,674 power plants with 96.2 GW of capacity, solar the largest share at 31.8 GW. Its interconnection queue holds 428 active requests for 188.5 GW.
Capacity by fuel
1,674 power plants with 96.2 GW of capacity, planned generators left out.
- Solar: 31.8 GW from 828 plants (33%)
- Natural gas: 30.1 GW from 268 plants (31%)
- Battery storage: 10.3 GW from 142 plants (11%)
- Wind: 10.1 GW from 118 plants (10%)
- Hydro: 7.1 GW from 184 plants (7%)
- Nuclear: 2.2 GW from 1 plant (2%)
- Pumped storage: 1.9 GW from 5 plants (2%)
- Geothermal: 1.3 GW from 15 plants (1%)
- Biomass: 901 MW from 93 plants (1%)
- Oil: 395 MW from 15 plants (under 1%)
- Other: 67 MW from 4 plants (under 1%)
- Coal: 57 MW from 1 plant (under 1%)
Largest plants
- SunZia Wind South: Wind, 2.6 GW, New Mexico
- Diablo Canyon: Nuclear, 2.2 GW, California
- Ormond Beach: Natural gas, 1.5 GW, California
- Dynegy Moss Landing Power Plant Hybrid: Natural gas, 1.5 GW, California
- Helms Pumped Storage: Pumped storage, 1.2 GW, California
- AES Alamitos LLC: Natural gas, 1.1 GW, California
- SunZia Wind North: Wind, 1.1 GW, New Mexico
- Mountainview Generating Station: Natural gas, 1 GW, California
- La Paloma Generating Plant: Natural gas, 1 GW, California
- Bellefield Solar and Energy Storage Farm: Solar, 1 GW, California
Planned and under construction
137 generators planned, under construction or testing, 25 GW in all, not counted above.
- Solar: 15.3 GW
- Battery storage: 5.2 GW
- Wind: 3.9 GW
- Pumped storage: 600 MW
- Biomass: 15 MW
- Hydro: 8 MW
Interconnection queue
428 active requests to connect 188.5 GW of new generation and storage, and 1 suspended request, from Lawrence Berkeley National Laboratory's Queued Up data.
- Solar: 128.5 GW in 220 requests
- Battery storage: 47.5 GW in 170 requests
- Wind: 7.2 GW in 21 requests
- Natural gas: 3.5 GW in 8 requests
- Other: 1.7 GW in 5 requests
- Geothermal: 110 MW in 2 requests
- Hydro: 5 MW in 2 requests
States and provinces
- California: 1,648 plants
- Arizona: 14 plants
- Nevada: 10 plants
- New Mexico: 2 plants
Sources
Power plants: EIA-860M (US); NRCan NACEI (Canada, Mexico); WRI GPPD (Mexico); OpenStreetMap via Geofabrik (Canada, Mexico gap fill); USGS USWTDB/USPVDB; EPA eGRID; Natural Earth admin-1; HIFLD control areas; location attributes from WorldPop (R2025A), Global Solar Atlas PVOUT, Global Wind Atlas 4, USFS Wildfire Hazard Potential, the USGS National Seismic Hazard Model and the previous publish's lines and substations; water distances from OpenStreetMap via Geofabrik; gas distances and county queue from the previous publish's EIA gas pipelines and LBNL Queued Up requests; nearest city from Natural Earth populated places; cooling degree days from NOAA NCEI nClimDiv county normals; elevation and slope from the Copernicus DEM GLO-30 (ESA, via AWS Open Data); water stress from WRI Aqueduct 4.0; ozone nonattainment from the EPA Green Book; drought from the U.S. Drought Monitor; tribal land from US Census TIGER/Line. License: ODbL (derivative database; EIA content is public domain, NRCan OGL-Canada, WRI GPPD CC BY 4.0; location attributes from WorldPop, Global Solar Atlas, Global Wind Atlas, LBNL Queued Up and WRI Aqueduct CC BY 4.0, USFS, USGS, EIA, NOAA, EPA, US Census and Natural Earth public domain, Copernicus DEM GLO-30 © DLR e.V. and Airbus Defence and Space GmbH, the U.S. Drought Monitor courtesy of NDMC)
Interconnection queue requests: Lawrence Berkeley National Laboratory and GridTracker, "Queued Up". License: CC BY 4.0
ISO and RTO regions: HIFLD Control Areas grouped by EIA-930 reference tables membership; Natural Earth admin-1 provinces for IESO/AESO/HQ; carbon intensity from EPA eGRID (US) and ECCC National Inventory Report (Canada). License: Public domain (EPA eGRID, HIFLD); ECCC figures under the Open Government Licence – Canada