Electric Substations by State

Substations are where high-voltage transmission steps down to usable power — and proximity to an energized, high-voltage substation is the single strongest speed-to-power signal for siting a datacenter. Browse the GridCensus catalog of electric transmission substations by state to see voltage class, operator, connected lines, and the candidate sites closest to each.

California3,003 named substations Texas1,426 named substations Florida943 named substations Washington785 named substations Wisconsin768 named substations New York570 named substations Oregon554 named substations Virginia529 named substations Tennessee517 named substations Arizona466 named substations Ohio465 named substations Colorado400 named substations New Mexico387 named substations Indiana306 named substations Louisiana297 named substations Michigan277 named substations Idaho274 named substations Pennsylvania251 named substations Utah243 named substations Massachusetts229 named substations Illinois209 named substations Minnesota208 named substations Kentucky190 named substations Maryland186 named substations Nevada175 named substations Arkansas174 named substations West Virginia165 named substations Mississippi163 named substations New Jersey163 named substations Alabama158 named substations Connecticut154 named substations Montana149 named substations Vermont131 named substations North Carolina106 named substations Iowa104 named substations Georgia100 named substations Oklahoma89 named substations Missouri74 named substations Wyoming73 named substations Maine67 named substations North Dakota64 named substations South Carolina54 named substations New Hampshire46 named substations Kansas45 named substations Rhode Island40 named substations South Dakota40 named substations Delaware39 named substations Nebraska28 named substations Alaska23 named substations District of Columbia17 named substations Hawaii14 named substations

Dataset updated November 2026. Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score is free to browse. Pro adds Watchtower on 25 sites, alerts when new candidate sites, datacenters or interconnection-queue requests appear in your markets, score and capacity history, and CSV export. Enterprise adds team seats, weekly data files for all 147,272 sites, the REST API and an MCP server for AI tools.

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