ISOs and RTOs
The independent system operators and regional transmission organizations that run the high-voltage grid and wholesale electricity markets across much of North America.
All ISOs and RTOs
- ERCOT: Electric Reliability Council of Texas, 173.1 GW from 1,007 plants
- CAISO: California Independent System Operator, 96.2 GW from 1,674 plants
- PJM: PJM Interconnection, 213.3 GW from 2,112 plants
- MISO: Midcontinent Independent System Operator, 200.3 GW from 2,454 plants
- SPP: Southwest Power Pool, 99 GW from 730 plants
- NYISO: New York Independent System Operator, 43 GW from 1,101 plants
- ISO-NE: ISO New England, 36.5 GW from 1,482 plants
- IESO: Independent Electricity System Operator, 38.9 GW from 443 plants
- AESO: Alberta Electric System Operator, 20.2 GW from 148 plants
- Hydro-Québec: 46.5 GW from 215 plants
Sources
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
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)