Electric Substations in Alabama
158 named substations in Alabama, 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
How is Alabama's substation network split by voltage?
By maximum voltage, the named substations break down as 15 at 500 kV and above; 33 at 230–344 kV; 98 at 115–229 kV; 12 withvoltage not recorded. 9% of Alabama'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 Alabama compare with other states?
Alabama ranks 30th of 50 states and DC by number of named substations and 33rd by named substations at 345 kV or above. It also has 3,107 scored datacenter candidate sites with an average DC Readiness score of 55 (national average 53), and an average power sub-score of 41.1 against 37.4 nationally. Most of those sites (3,107) are in the SERC market.
Which substations in Alabama have the highest voltage?
| Substation | Max voltage | Connected lines | Line owner |
|---|---|---|---|
| AUTAUGAVILLE | 500 kV | 5 | ALABAMA POWER CO |
| BELLEFONTE | 500 kV | 7 | TENNESSEE VALLEY AUTHORITY |
| BIG CREEK | 500 kV | 9 | ALABAMA POWER CO |
| BILLINGSLEY | 500 kV | 4 | ALABAMA POWER CO |
| BROWNS FERRY | 500 kV | 10 | TENNESSEE VALLEY AUTHORITY |
| CLAY | 500 kV | 6 | ALABAMA POWER CO |
| EAST CULLMAN | 500 kV | 5 | ALABAMA POWER CO |
| LIMESTONE | 500 kV | 6 | TENNESSEE VALLEY AUTHORITY |
| MADISON | 500 kV | 10 | TENNESSEE VALLEY AUTHORITY |
| NORTH BREWTON | 500 kV | 6 | ALABAMA POWER CO |
| SNOWDOUN | 500 kV | 7 | ALABAMA POWER CO |
| SOUTH BESSEMER | 500 kV | 7 | ALABAMA POWER CO |
| TRINITY | 500 kV | 15 | TENNESSEE VALLEY AUTHORITY |
| WEST VERNON | 500 kV | 4 | ALABAMA POWER CO |
| WIDOWS CREEK 500KV | 500 kV | 5 | TENNESSEE VALLEY AUTHORITY |
| ACIPCO EAF NO.3 CU | 230 kV | 1 | ALABAMA POWER CO |
| ANNISTON | 230 kV | 3 | ALABAMA POWER CO |
| AUTAUGAVILLE 230KV | 230 kV | 6 | ALABAMA POWER CO |
| BOYLES | 230 kV | 8 | ALABAMA POWER CO |
| BRADLEY ROAD D.S. | 230 kV | 2 | ALABAMA POWER CO |
| CHATOM | 230 kV | 4 | ALABAMA POWER CO |
| CHICKASAW | 230 kV | 7 | ALABAMA POWER CO |
| CO LINE ROAD | 230 kV | 6 | ALABAMA POWER CO |
| DUNCANVILLE S.S. | 230 kV | 3 | ALABAMA POWER CO |
| EAST PELHAM | 230 kV | 4 | ALABAMA POWER CO |
| GREENE COUNTY STATION | 230 kV | 11 | ALABAMA POWER CO |
| HILLABEE STATION | 230 kV | 5 | ALABAMA POWER CO |
| HOLT T.S. | 230 kV | 10 | ALABAMA POWER CO |
| LEEDS | 230 kV | 15 | ALABAMA POWER CO |
| MADISON PARK | 230 kV | 5 | ALABAMA POWER CO |
| MAGELLA | 230 kV | 10 | ALABAMA POWER CO |
| MONTGOMERY SWITCHING STATION | 230 kV | 5 | ALABAMA POWER CO |
| NORTH MOBILE | 230 kV | 11 | ALABAMA POWER CO |
| NORTH SELMA | 230 kV | 5 | ALABAMA POWER CO |
| OPP | 230 kV | 10 | ALABAMA POWER CO |
| PINCKARD | 230 kV | 12 | ALABAMA POWER CO |
| PLANT GASTON | 230 kV | 12 | ALABAMA POWER CO |
| SILVERHILL | 230 kV | 10 | ALABAMA POWER CO |
| SLOCOMB | 230 kV | 3 | ALABAMA POWER CO |
| SOUTH MONTGOMERY | 230 kV | 7 | ALABAMA POWER CO |
| SOUTH TUSCALOOSA T.S. | 230 kV | 5 | ALABAMA POWER CO |
| THEODORE | 230 kV | 7 | ALABAMA POWER CO |
| TUSCALOOSA T.S. | 230 kV | 7 | ALABAMA POWER CO |
| WACHOVIA | 230 kV | 9 | ALABAMA POWER CO |
| WEBB | 230 kV | 7 | ALABAMA POWER CO |
| WEST MCINTOSH | 230 kV | 3 | ALABAMA POWER CO |
| WEST MCINTOSH (POWERSOUTH) | 230 kV | 2 | ALABAMA POWER CO |
| WEST MONTGOMERY | 230 kV | 9 | ALABAMA POWER CO |
| 24TH ST | 161 kV | 1 | ALABAMA POWER CO |
| ADDISON | 161 kV | 1 | ALABAMA POWER CO |
| AIRPORT ROAD | 161 kV | 1 | TENNESSEE VALLEY AUTHORITY |
| ALBERTVILLE | 161 kV | 6 | ALABAMA POWER CO |
| ARAB | 161 kV | 4 | — |
| ARDMORE | 161 kV | 5 | TENNESSEE VALLEY AUTHORITY |
| ATHENS | 161 kV | 7 | TENNESSEE VALLEY AUTHORITY |
| AZCO | 161 kV | 2 | TENNESSEE VALLEY AUTHORITY |
| BARTON | 161 kV | 1 | TENNESSEE VALLEY AUTHORITY |
| BELLGREEN | 161 kV | 1 | ALABAMA POWER CO |
| BRINDLEY | 161 kV | 3 | — |
| BRYANT | 161 kV | 2 | GEORGIA POWER CO |
Every named substation in Alabama
All 158 named substations, grouped by voltage band.
500 kV and above · 15
230–344 kV · 33
- ACIPCO EAF NO.3 CU
- ANNISTON
- AUTAUGAVILLE 230KV
- BOYLES
- BRADLEY ROAD D.S.
- CHATOM
- CHICKASAW
- CO LINE ROAD
- DUNCANVILLE S.S.
- EAST PELHAM
- GREENE COUNTY STATION
- HILLABEE STATION
- HOLT T.S.
- LEEDS
- MADISON PARK
- MAGELLA
- MONTGOMERY SWITCHING STATION
- NORTH MOBILE
- NORTH SELMA
- OPP
- PINCKARD
- PLANT GASTON
- SILVERHILL
- SLOCOMB
- SOUTH MONTGOMERY
- SOUTH TUSCALOOSA T.S.
- THEODORE
- TUSCALOOSA T.S.
- WACHOVIA
- WEBB
- WEST MCINTOSH
- WEST MCINTOSH (POWERSOUTH)
- WEST MONTGOMERY
115–229 kV · 98
- 24TH ST
- ADDISON
- AIRPORT ROAD
- ALBERTVILLE
- ARAB
- ARDMORE
- ATHENS
- AZCO
- BARTON
- BELLGREEN
- BRINDLEY
- BRYANT
- BURROWS CROSSING ROAD
- CHASE
- CHEROKEE
- CHEROKEE
- COLLINSVILLE
- COLUMBUS CITY
- CULLMAN
- CULLMAN INDUSTRIAL
- CURRY
- DECATUR
- EBENEZER
- ELGIN
- FAIRVIEW
- FLAT ROCK
- FORD CITY
- FORT PAYNE PRIMARY
- FYFFE
- GAMER
- GEORGIA MOUNTAIN
- GM
- GUNTERSVILLE DAM
- GUNTERSVILLE PRIMARY
- GURLEY
- HALEYVILLE TS
- HARTSELLE
- HELICON
- HENAGAR
- HUNTSVILLE
- IRONMAN
- JONES CHAPEL
- LACEYS SPRING
- LIM ROCK
- MT HOPE
- N ALBERTVILLE
- NANCE
- NEEL
- NORTHWEST PRIMARY
- OAKLAND
- PARKLAND SWITCHING STATION
- PEACH ORCHARD
- PENCE
- PRICEVILLE
- RED BAY
- REDSTONE #3
- ROGERSVILLE
- S HOLLYWOOD
- SCOTTSBORO
- SECTION
- SHOALS
- SPRING CREEK
- STEVENSON
- SYLVANIA
- TUSCUMBIA
- W CULLMAN
- WHEELER DAM
- WILSON DAM
- WOODMONT
- AIRPORT LANE
- ALABASTER SWITCHING STATION
- ALEXANDRIA
- BLOUNTSVILLE
- BONNY BROOK
- CALERA D.S.
- CALERA T.S.
- COTTONDALE D.S.
- CRESCENT RIDGE D.S.
- DALEVILLE
- FORT RUCKER
- FRIENDSHIP
- HARGROVE ROAD D.S.
- HENRY ROAD
- JEMISON
- JORDAN DAM
- MASSEY ROAD
- MAXWELL FIELD
- MCADORY
- MERCEDES BENZ U.S. INTERNATIONAL
- MITCHELL DAM
- NORTH SARALAND
- OXANNA
- OXFORD
- PATTON CHAPEL
- SOUTH JEFFERSON
- WASHINGTON PARK DS
- WEISS DAM POWERHOUSE
- YACHT CLUB D.S.
Frequently asked questions
How many electric substations are in Alabama?
HIFLD records 2,790 substations in Alabama, of which 158 carry a station name. That is the 30th-most named substations of any state in the dataset.
What is the highest-voltage substation in Alabama?
15 named substations in Alabama share the top voltage of 500 kV, including AUTAUGAVILLE, BELLEFONTE, BIG CREEK.
Which substation in Alabama connects the most transmission lines?
TRINITY has the most connected transmission lines of the named substations listed here, with 15 at up to 500 kV.
How many substations in Alabama are 345 kV or higher?
15 of 158 named substations (9%) operate at 345 kV or above, compared with 8% nationally. Alabama ranks 33rd of 50 states and DC for named substations at that level.
How many datacenter candidate sites in Alabama are at substations?
1,164 of the 3,107 scored candidate sites in Alabama are substation sites — locations generated at an existing substation. Scored sites across Alabama average 55 on the 0–100 DC Readiness scale, against 53 nationally.
Looking for a specific record? The directory lists every substation in Alabama, A to Z.
More on Alabama, 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 Alabama”, https://gridcensus.com/substations/alabama (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 Alabama 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.