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Electric Substations in Tennessee

517 named substations in Tennessee, 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

Tennessee has 1,967 electric substation records in the HIFLD dataset, 517 of them with a station name (the other 1,450 are unnamed tap points, risers and line ends). 25 named substations operate at 345 kV or above, 25 of them at 500 kV or more. The highest recorded voltage is 500 kV and the median is 161 kV.

How is Tennessee's substation network split by voltage?

By maximum voltage, the named substations break down as 25 at 500 kV and above; 1 at 230–344 kV; 376 at 115–229 kV; 62 at 69–114 kV; 53 withvoltage not recorded. 5% of Tennessee's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 161 kV is above the national median of 115 kV.

How does Tennessee compare with other states?

Tennessee ranks 9th of 50 states and DC by number of named substations and 20th by named substations at 345 kV or above. It also has 2,190 scored datacenter candidate sites with an average DC Readiness score of 57 (national average 53), and an average power sub-score of 41.8 against 37.4 nationally. Most of those sites (2,073) are in the SERC market.

Which substations in Tennessee have the highest voltage?

SubstationMax voltageConnected linesLine owner
BROWNSVILLE500 kV3TENNESSEE VALLEY AUTHORITY
BULL RUN500 kV13TENNESSEE VALLEY AUTHORITY
CORDOVA500 kV20TENNESSEE VALLEY AUTHORITY
CUMBERLAND 500KV500 kV5TENNESSEE VALLEY AUTHORITY
DAVIDSON500 kV11TENNESSEE VALLEY AUTHORITY
FRANKLIN500 kV8TENNESSEE VALLEY AUTHORITY
FREEPORT500 kV15TENNESSEE VALLEY AUTHORITY
GLEASON500 kV3TENNESSEE VALLEY AUTHORITY
JACKSON500 kV9TENNESSEE VALLEY AUTHORITY
JOHNSONVILLE500 kV5TENNESSEE VALLEY AUTHORITY
LAGOON CREEK500 kV4TENNESSEE VALLEY AUTHORITY
MAURY500 kV12TENNESSEE VALLEY AUTHORITY
MONTGOMERY500 kV13TENNESSEE VALLEY AUTHORITY
NAGEL500 kV8TENNESSEE VALLEY AUTHORITY
PHILLIPS BEND500 kV10KINGSPORT POWER CO
PIN HOOK500 kV8TENNESSEE VALLEY AUTHORITY
RACCOON MOUNTAIN500 kV15TENNESSEE VALLEY AUTHORITY
RUTHERFORD500 kV9TENNESSEE VALLEY AUTHORITY
SHELBY500 kV12TENNESSEE VALLEY AUTHORITY
SOUTH BRADLEY500 kV5TENNESSEE VALLEY AUTHORITY
SULLIVAN500 kV13KINGSPORT POWER CO
VOLUNTEER500 kV16TENNESSEE VALLEY AUTHORITY
WATTS BAR POWER STATION500 kV8TENNESSEE VALLEY AUTHORITY
WEAKLEY500 kV9TENNESSEE VALLEY AUTHORITY
WILSON500 kV10TENNESSEE VALLEY AUTHORITY
CONCORD230 kV6GEORGIA POWER CO
AIRPORT161 kV2TENNESSEE VALLEY AUTHORITY
ALAMO161 kV3TENNESSEE VALLEY AUTHORITY
ALCOA SW STATION161 kV12TENNESSEE VALLEY AUTHORITY
ALGOOD161 kV1TENNESSEE VALLEY AUTHORITY
ALLEN161 kV15TENNESSEE VALLEY AUTHORITY
ALMAVILLE161 kV2TENNESSEE VALLEY AUTHORITY
ALUMAX161 kV1TENNESSEE VALLEY AUTHORITY
ANDERSONVILLE161 kV1TENNESSEE VALLEY AUTHORITY
APALACHIA161 kV6TENNESSEE VALLEY AUTHORITY
APISON PIKE161 kV2TENNESSEE VALLEY AUTHORITY
ASHLAND CITY161 kV1TENNESSEE VALLEY AUTHORITY
ASPEN GROVE161 kV2TENNESSEE VALLEY AUTHORITY
ATHENS161 kV9TENNESSEE VALLEY AUTHORITY
BANGHAM161 kV2TENNESSEE VALLEY AUTHORITY
BARKERS MILL161 kV2TENNESSEE VALLEY AUTHORITY
BASIN161 kV3TENNESSEE VALLEY AUTHORITY
BATTLEFIELD161 kV5TENNESSEE VALLEY AUTHORITY
BAXTER161 kV2TENNESSEE VALLEY AUTHORITY
BEAR CREEK161 kV1TENNESSEE VALLEY AUTHORITY
BEARWALLOW161 kV2TENNESSEE VALLEY AUTHORITY
BEECH BLUFF161 kV1TENNESSEE VALLEY AUTHORITY
BELFAST161 kV2TENNESSEE VALLEY AUTHORITY
BENTON161 kV1TENNESSEE VALLEY AUTHORITY
BETHEL ROAD161 kV2TENNESSEE VALLEY AUTHORITY
BIG SANDY161 kV1—
BLOUNT161 kV1TENNESSEE VALLEY AUTHORITY
BLUFF CITY161 kV7KINGSPORT POWER CO
BOLIVAR161 kV5TENNESSEE VALLEY AUTHORITY
BON AQUA161 kV1TENNESSEE VALLEY AUTHORITY
BONWOOD161 kV1TENNESSEE VALLEY AUTHORITY
BOONE DAM161 kV9KINGSPORT POWER CO
BOWATER161 kV3TENNESSEE VALLEY AUTHORITY
BRAYTOWN161 kV4TENNESSEE VALLEY AUTHORITY
BRIDGESTONE161 kV1TENNESSEE VALLEY AUTHORITY

Every named substation in Tennessee

All 517 named substations, grouped by voltage band.

500 kV and above · 25

230–344 kV · 1

115–229 kV · 376

69–114 kV · 62

voltage not recorded · 53

Frequently asked questions

How many electric substations are in Tennessee?

HIFLD records 1,967 substations in Tennessee, of which 517 carry a station name. That is the 9th-most named substations of any state in the dataset.

What is the highest-voltage substation in Tennessee?

25 named substations in Tennessee share the top voltage of 500 kV, including BROWNSVILLE, BULL RUN, CORDOVA.

Which substation in Tennessee connects the most transmission lines?

CORDOVA has the most connected transmission lines of the named substations listed here, with 20 at up to 500 kV.

How many substations in Tennessee are 345 kV or higher?

25 of 517 named substations (5%) operate at 345 kV or above, compared with 8% nationally. Tennessee ranks 20th of 50 states and DC for named substations at that level.

How many datacenter candidate sites in Tennessee are at substations?

886 of the 2,190 scored candidate sites in Tennessee are substation sites — locations generated at an existing substation. Scored sites across Tennessee average 57 on the 0–100 DC Readiness scale, against 53 nationally.

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

More on Tennessee, 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 Tennessee”, https://gridcensus.com/substations/tennessee (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 Tennessee 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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