Map features high-voltage transmission lines and power plants categorized by 11 different energy sources by major metropolitan areas. Each individual map includes the names of large power plants with a net summer capacity greater than 1,200 MW.
Technical notes:
Data for all power plants in the U.S. with at least 1 MW nameplate capacity were grouped into 11 different energy sources. In cases where a plant uses more than one energy source, the plant was categorized by its predominant energy source. Some map markers were moved slightly to improve their visibility.
Sources:
Power plants - U.S. Energy Information Administration, EIA-860M survey (Jan. 2025 data)
Transmission lines - HIFLD Open Data (updated July 2022).