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Electric Substations in Wyoming

73 named substations in Wyoming, with the highest-voltage facilities listed first. Each substation profile shows voltage class, connected transmission lines, and the datacenter candidate sites closest to it.

At a glance

Wyoming has 849 electric substation records in the HIFLD dataset, 73 of them with a station name (the other 776 are unnamed tap points, risers and line ends). 2 named substations operate at 345 kV or above. The highest recorded voltage is 345 kV and the median is 230 kV.

How is Wyoming's substation network split by voltage?

By maximum voltage, the named substations break down as 2 at 345–499 kV; 47 at 230–344 kV; 9 at 115–229 kV; 8 at 69–114 kV; 7 below 69 kV. 3% of Wyoming's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 230 kV is above the national median of 115 kV.

How does Wyoming compare with other states?

Wyoming ranks 39th of 50 states and DC by number of named substations and 46th by named substations at 345 kV or above. It also has 1,639 scored datacenter candidate sites with an average DC Readiness score of 52.2 (national average 53), and an average power sub-score of 37.5 against 37.4 nationally. Most of those sites (970) are in the SPP market.

Which substations in Wyoming have the highest voltage?

SubstationMax voltageConnected linesLine owner
JIM BRIDGER345 kV12PACIFICORP
LARAMIE RIVER345 kV8TRI-STATE G & T ASSN, INC
ANTELOPE MINE230 kV2BASIN ELECTRIC POWER COOP
ARCHER230 kV9WAPA-- WESTERN AREA POWER ADMINISTRATION
ATLANTIC CITY230 kV3PACIFICORP
BAR X230 kV4PACIFICORP
BITTER CREEK230 kV3PACIFICORP
BUFFALO230 kV4PACIFICORP
CARR DRAW230 kV5PACIFICORP
CHEYENNE230 kV3WAPA-- WESTERN AREA POWER ADMINISTRATION
CLAIM JUMPER230 kV2PACIFICORP
CRAVEN CREEK230 kV5PACIFICORP
DIFFICULTY230 kV3PACIFICORP
ECHO SPRINGS230 kV2PACIFICORP
FIREHOLE230 kV3PACIFICORP
FOOTE CREEK230 kV7PACIFICORP
FRANNIE230 kV4BASIN ELECTRIC POWER COOP
FREEZEOUT230 kV5PACIFICORP
FREEZEOUT230 kV1PACIFICORP
FREMONT CANYON230 kV2WAPA-- WESTERN AREA POWER ADMINISTRATION
GARLAND230 kV3PACIFICORP
GRASS CREEK230 kV2PACIFICORP
GREAT DIVIDE230 kV1PACIFICORP
HUGHES230 kV6BLACK HILLS POWER, INC.
KAYCEE230 kV2PACIFICORP
LATHAM230 kV2PACIFICORP
LATIGO230 kV3PACIFICORP
LITTLE MOUNTAIN230 kV2PACIFICORP
MIDWEST230 kV3PACIFICORP
MINERS230 kV3PACIFICORP
MIRACLE MILE230 kV6WAPA-- WESTERN AREA POWER ADMINISTRATION
MONUMENT230 kV5PACIFICORP
MUSTANG230 kV3PACIFICORP
OREGON BASIN230 kV4PACIFICORP
POINT OF ROCKS230 kV4PACIFICORP
RENO230 kV5POWDER RIVER ENERGY CORPORATION
RIVERTON230 kV6PACIFICORP
ROCK SPRINGS230 kV7PACIFICORP
SEMINOE230 kV3HIGH PLAINS POWER INC
SHERIDAN230 kV5MONTANA-DAKOTA UTILITIES CO
SOUTH TRONA230 kV2PACIFICORP
SPENCE230 kV3WAPA-- WESTERN AREA POWER ADMINISTRATION
TECKLA230 kV7BASIN ELECTRIC POWER COOP
THERMOPOLIS230 kV6PACIFICORP
TONGUE RIVER230 kV3BASIN ELECTRIC POWER COOP
WEST VACO230 kV5BRIDGER VALLEY ELEC ASSN, INC
WINDSTAR230 kV8PACIFICORP
WYOPO230 kV4PACIFICORP
YELLOWCAKE230 kV2PACIFICORP
WILSON 1&2161 kV2LOWER VALLEY ENERGY INC
EAST JACKSON 1&2138 kV2LOWER VALLEY ENERGY INC
RAILROAD138 kV4PACIFICORP
BAIROIL115 kV6PACIFICORP
CRYSTAL SPRINGS115 kV2LOWER VALLEY ENERGY INC
OSAGE115 kV9BLACK HILLS POWER, INC.
RAFTER J115 kV2LOWER VALLEY ENERGY INC
TETON115 kV4BONNEVILLE POWER ADMINISTRATION
THERMOPOLIS115 kV6PACIFICORP
DEAD HEAD69 kV1HIGH PLAINS POWER INC
HAMILTON DOME69 kV4PACIFICORP

Every named substation in Wyoming

All 73 named substations, grouped by voltage band.

345–499 kV · 2

230–344 kV · 47

115–229 kV · 9

69–114 kV · 8

below 69 kV · 7

Frequently asked questions

How many electric substations are in Wyoming?

HIFLD records 849 substations in Wyoming, of which 73 carry a station name. That is the 39th-most named substations of any state in the dataset.

What is the highest-voltage substation in Wyoming?

2 named substations in Wyoming share the top voltage of 345 kV, including JIM BRIDGER, LARAMIE RIVER.

Which substation in Wyoming connects the most transmission lines?

JIM BRIDGER has the most connected transmission lines of the named substations listed here, with 12 at up to 345 kV.

How many substations in Wyoming are 345 kV or higher?

2 of 73 named substations (3%) operate at 345 kV or above, compared with 8% nationally. Wyoming ranks 46th of 50 states and DC for named substations at that level.

How many datacenter candidate sites in Wyoming are at substations?

441 of the 1,639 scored candidate sites in Wyoming are substation sites — locations generated at an existing substation. Scored sites across Wyoming average 52.2 on the 0–100 DC Readiness scale, against 53 nationally.

Looking for a specific record? The directory lists every substation in Wyoming, A to Z.

More on Wyoming, and states with similar counts

About this data

Source: HIFLD Electric Substations and Transmission Lines (U.S. Department of Homeland Security), as published June 29, 2026. See the methodology for how records are matched, cleaned and scored.

Cite as: GridCensus, “Electric substations in Wyoming”, https://gridcensus.com/substations/wyoming (data as of June 29, 2026).

Dataset updated . Screening estimates derived from public data sources.

Go deeper than the public screen

Every site and score for substations in Wyoming 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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