Wyoming has 548 electrical substations recorded in the federal Homeland Infrastructure Foundation-Level Data (HIFLD) dataset — the facilities where voltage is stepped up, stepped down, or switched as electricity moves across the power grid. They range from local distribution stations to extra-high-voltage transmission hubs, with the highest-voltage facilities operating at up to 345 kV.
Use the interactive map below to explore every substation in Wyoming, color-coded by voltage class. Search any address or ZIP code to find substations near you, or click any point for its voltage, connected line count, and operational status. To see the rest of the country, view the full US substations map.
Wyoming Substations by the Numbers
- 548 total electrical substations in Wyoming
- 3 extra-high-voltage substations (345 kV and above) — the long-distance transmission backbone
- 289 high-voltage transmission substations (100-345 kV)
- 244 distribution substations (under 100 kV) — stepping voltage down for local delivery
- 548 currently listed as in service
Where Wyoming’s Substations Are
Wyoming’s substations are spread across the state, but cluster around its main load centers and generation hubs. The areas with the most substations are Campbell (98), Sweetwater (42), Fremont (40), Natrona (34), and Laramie (33).
Wyoming’s Transmission and Distribution Grid
Of Wyoming’s 548 substations, 292 (about 53%) operate at transmission voltages of 100 kV or higher, including 3 extra-high-voltage facilities at 345 kV and above. The remaining substations operate at distribution voltages, stepping power down to the levels used on the local lines that serve homes and businesses.
Frequently Asked Questions
How many electrical substations are in Wyoming?
Wyoming has 548 electrical substations recorded in the federal HIFLD dataset, of which 548 are listed as in service.
What is the highest substation voltage in Wyoming?
Wyoming’s highest-voltage substations operate at up to 345 kV. Substations at 345 kV and above carry power across long distances as the transmission backbone of the grid.
Where are most of Wyoming’s substations?
Wyoming’s substations are most concentrated around Campbell, with 98 substations, followed by Sweetwater and Fremont.
Does this map show every substation in Wyoming?
It shows the 548 substations recorded in the HIFLD dataset. Coverage of the transmission grid is comprehensive, but some smaller distribution substations, private facilities, and very recently built substations may not appear.
→ Explore all 55,476 electrical substations on the US substations map
