Electric Substations in Ohio
465 named substations in Ohio, 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 Ohio's substation network split by voltage?
By maximum voltage, the named substations break down as 8 at 500 kV and above; 52 at 345–499 kV; 189 at 115–229 kV; 17 at 69–114 kV; 199 withvoltage not recorded. 13% of Ohio's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 138 kV is above the national median of 115 kV.
How does Ohio compare with other states?
Ohio ranks 11th of 50 states and DC by number of named substations and 4th by named substations at 345 kV or above. It also has 3,933 scored datacenter candidate sites with an average DC Readiness score of 53.2 (national average 53), and an average power sub-score of 36.5 against 37.4 nationally. Most of those sites (3,927) are in the PJM market.
Which substations in Ohio have the highest voltage?
| Substation | Max voltage | Connected lines | Line owner |
|---|---|---|---|
| CORRIDOR | 765 kV | 8 | AMERICAN ELECTRIC POWER CO., INC |
| DON MARQUIS 765 KV | 765 kV | 7 | OHIO POWER CO |
| FLATLICK | 765 kV | 3 | AMERICAN ELECTRIC POWER CO., INC |
| GAVIN | 765 kV | 12 | OHIO POWER CO |
| HANGING ROCK | 765 kV | 5 | AMERICAN ELECTRIC POWER CO., INC |
| MARYSVILLE | 765 kV | 7 | AMERICAN ELECTRIC POWER CO., INC |
| NORTH PROCTORVILLE SUBSTATION | 765 kV | 7 | OHIO POWER CO |
| SOUTH CANTON 765KV | 765 kV | 2 | OHIO POWER CO |
| ADKINS | 345 kV | 3 | AMERICAN ELECTRIC POWER CO., INC |
| ALLEN JUNCTION | 345 kV | 7 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| ATLANTA | 345 kV | 3 | AMERICAN ELECTRIC POWER CO., INC |
| BATH | 345 kV | 7 | DAYTON POWER AND LIGHT CO. |
| BEAVER | 345 kV | 12 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| BIERS RUN | 345 kV | 4 | AMERICAN ELECTRIC POWER CO., INC |
| BIXBY | 345 kV | 11 | AMERICAN ELECTRIC POWER CO., INC |
| CHAMBERLIN | 345 kV | 7 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| CONESVILLE STATION | 345 kV | 8 | OHIO POWER CO |
| CORRIDOR | 345 kV | 8 | AMERICAN ELECTRIC POWER CO., INC |
| DAVIS-BESSE | 345 kV | 5 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| DON MARQUIS | 345 kV | 7 | OHIO POWER CO |
| EAST LIMA SUBSTATION | 345 kV | 13 | OHIO POWER CO |
| EASTLAKE STATION | 345 kV | 13 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| FOSTER | 345 kV | 11 | DUKE ENERGY |
| FOSTORIA CENTRAL SUBSTATION | 345 kV | 9 | AMERICAN ELECTRIC POWER CO., INC |
| FOX | 345 kV | 10 | — |
| GALION | 345 kV | 8 | OHIO POWER CO |
| GREENE | 345 kV | 10 | DAYTON POWER & LIGHT CO |
| HANNA | 345 kV | 12 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| HAYDEN | 345 kV | 4 | AMERICAN ELECTRIC POWER CO., INC |
| HIGHLAND | 345 kV | 11 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| HYATT | 345 kV | 13 | AMERICAN ELECTRIC POWER CO., INC |
| HYATT | 345 kV | 4 | AMERICAN ELECTRIC POWER CO., INC |
| JUG STREET | 345 kV | 3 | AMERICAN ELECTRIC POWER CO., INC |
| JUNIPER | 345 kV | 19 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| KILLEN | 345 kV | 3 | AMERICAN ELECTRIC POWER CO., INC |
| KIRK | 345 kV | 9 | OHIO POWER CO |
| LEMOYNE | 345 kV | 11 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| LEROY CENTER | 345 kV | 14 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| MIAMI | 345 kV | 16 | DUKE ENERGY |
| MIAMI | 345 kV | 9 | DAYTON POWER AND LIGHT CO. |
| MUSKINGUM RIVER | 345 kV | 10 | OHIO POWER CO |
| NORTH MEDINA | 345 kV | 4 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| OHIO CENTRAL | 345 kV | 12 | OHIO POWER CO |
| PERRY | 345 kV | 5 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| PIERCE | 345 kV | 11 | DUKE ENERGY OHIO INC |
| PORT UNION SUBSTATION | 345 kV | 13 | DUKE ENERGY |
| R.P.MONE | 345 kV | 3 | AMERICAN ELECTRIC POWER CO., INC |
| SHELBY | 345 kV | 5 | DAYTON POWER & LIGHT CO |
| SOUTH BERWICK | 345 kV | 3 | AMERICAN ELECTRIC POWER CO., INC |
| SOUTH CANTON 345KV | 345 kV | 6 | OHIO POWER CO |
| SOUTH EAST CANTON | 345 kV | 10 | OHIO POWER CO |
| SOUTHWEST LIMA | 345 kV | 6 | OHIO POWER CO |
| STAR | 345 kV | 11 | AMERICAN TRANSMISSION SYSTEMS, INC. |
| SUGAR CREEK | 345 kV | 5 | DAYTON POWER & LIGHT CO |
| TIDD | 345 kV | 6 | AMERICAN ELECTRIC POWER CO., INC |
| TODHUNTER SUBSTATION | 345 kV | 13 | DUKE ENERGY |
| WEST BELLAIRE (345KV) | 345 kV | 4 | OHIO POWER CO |
| WEST MILLERSPORT | 345 kV | 8 | OHIO POWER CO |
| WEST MILTON | 345 kV | 8 | DAYTON POWER & LIGHT CO |
| ZIMMER | 345 kV | 5 | DUKE ENERGY OHIO INC |
Every named substation in Ohio
All 465 named substations, grouped by voltage band.
500 kV and above · 8
345–499 kV · 52
- ADKINS
- ALLEN JUNCTION
- ATLANTA
- BATH
- BEAVER
- BIERS RUN
- BIXBY
- CHAMBERLIN
- CONESVILLE STATION
- CORRIDOR
- DAVIS-BESSE
- DON MARQUIS
- EAST LIMA SUBSTATION
- EASTLAKE STATION
- FOSTER
- FOSTORIA CENTRAL SUBSTATION
- FOX
- GALION
- GREENE
- HANNA
- HAYDEN
- HIGHLAND
- HYATT
- HYATT
- JUG STREET
- JUNIPER
- KILLEN
- KIRK
- LEMOYNE
- LEROY CENTER
- MIAMI
- MIAMI
- MUSKINGUM RIVER
- NORTH MEDINA
- OHIO CENTRAL
- PERRY
- PIERCE
- PORT UNION SUBSTATION
- R.P.MONE
- SHELBY
- SOUTH BERWICK
- SOUTH CANTON 345KV
- SOUTH EAST CANTON
- SOUTHWEST LIMA
- STAR
- SUGAR CREEK
- TIDD
- TODHUNTER SUBSTATION
- WEST BELLAIRE (345KV)
- WEST MILLERSPORT
- WEST MILTON
- ZIMMER
115–229 kV · 189
- AETNA
- AIRWAY
- ALLIANCE CASTINGS
- ALPHA
- AMPOR
- AMSTERDAM
- APPLE CREEK
- ASHLAND
- AVERY
- BABB
- BALDWIN
- BARNESVILLE
- BELLBROOK
- BERRYWOOD
- BLUEBELL
- BOARDMAN
- BOLIVAR
- BROADACRE
- BRUSH
- BUFFTON
- CANAL ROAD
- CARROLLTON
- CENTERVILLE
- CHANDLERSVILLE
- CHARLES SUBSTATION
- CIRCLEVILLE
- CITY OF BRYAN
- CLARK
- CLINTON
- CLUTCH SWITCH
- COLLINWOOD
- CORNERSBURG
- CRUM
- DALE
- DARROW
- DECANT
- DEVOLA
- DRESDEN
- EAST AKRON
- EAST AMSTERDAM
- EAST BROAD STREET
- EAST PROCTORVILLE
- EAST SIDE LIMA
- EAST SIDNEY
- EAST SPRINGFIELD
- EAST WOOSTER
- EASTOWN ROAD
- ELDEAN
- EVANS
- FAIRCREST
- FINDLAY
- FIRESTONE
- FORD
- FORD LIMA
- FOSTORIA
- FOWLES
- FREY
- FRONT
- GILCHRIST
- GIVENS PIONEER COOP
- GLENCOE
- HAGAN
- HAVILAND
- HEMPSTEAD
- HIGHLAND
- HILLVIEW
- HOWARD
- IMPERIAL
- IX CENTER
- KEITH
- KENYON
- KEPLER
- KNOLLWOOD
- KNOX
- LAKEMORE
- LAKEVIEW
- LARK
- LESTER
- LICK
- LINCOLN PARK
- LOCKWOOD RD
- LOGAN
- LONDON
- LOWELLVILLE
- LUCENT
- MACKSBURG
- MACLEAN
- MALVERN
- MARION
- MASURY
- MAXWELL
- MECHANICSBURG
- MILES AVENUE
- MILLERSPORT
- MONUMENT
- MOORE
- NEFF
- NEGLEY
- NELSON
- NEW BARNESVILLE
- NEW CARLISLE
- NEW DEPARTURE
- NEWCOMERSTOWN
- NEWTON FALLS
- NINEMILE
- NORDONIA
- NORMANDY
- NORTH DELPHOS
- NORTH FINDLAY
- NORTH INTERTIE
- NORTHEAST CANTON
- NORTHWEST LIMA
- NORWAY
- NOTTINGHAM
- O. H. HUTCHINGS STATION
- ORDINANCE JUNCTION
- OVERLOOK
- PACKARD
- PEEBLES
- PHILO
- PIDGEON
- PIERCE
- PINE
- PIONEER COOP HONDA
- PORTSMOUTH
- POSTON
- PROGRESSIVE
- QUINCEY
- REEDSBURG
- REEDURBAN
- REPUBLIC STEEL
- ROCHELLE
- ROCKPORT
- ROCKPORT
- ROSEMONT
- SHALERSVILLE
- SHAWNEE ROAD
- SHINROCK
- SIDNEY
- SMUCKERS
- SOUREK
- SOUTH AKRON
- SOUTH BALTIMORE
- SOUTH CANTON 138KV
- SOUTH COSHOCTON
- SOUTH HICKSVILLE
- SOUTH MILLERSBURG
- SOUTH POINT
- SPEIDEL
- SPRUCE
- STAUNTON
- STERLING
- STRASBURG
- STRYKER
- SUMMERFIELD
- SUNNYSIDE
- TAYLOR
- THAYER ROAD
- TIMBER SWITCH
- TIMKEN
- TORREY
- TRACY
- TREBEIN
- TRIMBLE
- TUSC
- UNIVERSITY CIRCLE
- URBAN
- URBANA
- WAGENHALS
- WASHINGTON
- WATERFORD
- WATERVILLE
- WAVERLY SUBSTATION
- WEBSTER
- WEST AKRON
- WEST BELLAIRE (138KV)
- WEST CANTON
- WEST COSHOCTON
- WEST DOVER
- WEST HEBRON
- WEST LANCASTER SUBSTATION
- WEST LIMA
- WEST MILERSBURG
- WEST MILLERSBURG
- WEST MILLERSBURG
- WEST MOULTON
- WEST NEW PHILADELPHIA
- WEST RAVENNA
- WOOSTER
69–114 kV · 17
voltage not recorded · 199
- ABBE
- ACME HILL
- ADAMS
- AERO
- ALPINE
- ANDOVER
- ANGOLA
- ANNADALE
- ARLINGTON
- AURORA
- AZALEA
- B&W SUSBTATION
- BATH
- BAUMHART
- BAY
- BEECHWOOD
- BELDEN VILLAGE
- BELLE VISTA
- BELLEVUE
- BELMONT
- BERLIN CENTER
- BETHEL CHURCH
- BLUE RACER
- BOLTON
- BOWLING GREEN ELECTRIC NO 4
- BRADY
- BRIDGEVILLE
- BRIER HILL
- BRIMFIELD
- BROOKFIELD
- BRUNSWICK
- BUCKHORN
- CAMP
- CAMPBELL
- CAMPBELLSPORT
- CANFIELD
- CARROLL
- CARROLL
- CASE
- CASTALIA
- CATAWBA ISLAND
- CEDAR POINT
- CHARITY ROTCH
- CHILLICOTHE
- CHITTENDEN
- CIRCLE GREEN
- CIRCLE GREEN
- CLAYBEN
- CLIFTON
- CLINTON
- COITSVILLE
- CONGRESS
- COPLEY
- COVENTRY
- COVERT
- CRESTWOOD
- DALTON
- DENNISON
- DESERT ROAD
- DRAKE VALLEY
- DUBLIN
- EAST FINDLAY
- EAST KENT
- EAST LIVERPOOL
- EAST LIVERPOOL
- EAST SPARTA
- EDGERTON
- EIGHTEENTH STREET
- ELECTRICAL
- ELLSWORTH
- FAIRLAWN
- FLAT ROCK
- FREEDOM
- GABLE
- GARRETTSVILLE
- GEAUGA
- GETZ
- GEYER SWITCH
- GIRARD
- GOLDEN CORNERS
- GOULD
- GRANGER
- GREEN
- GREENTOWN
- HAMMONDSVILLE
- HANVILLE
- HARKNESS
- HARPSTER
- HARTVILLE
- HEFFERLINE
- HERITAGE
- HIGHLAND AVENUE
- HILLS
- HIRAM
- HOLT SWITCH
- HOME
- HOMER
- HUNT
- HURON
- INDIANOLA
- INVOLTA
- JARVIS
- JOHNSONS CORNERS
- KEENEY
- KELLY
- KENMORE
- KENT
- KILLBUCK
- KIMBERLY
- KRUMROY
- LAKESHORE
- LAMPING STATION
- LANDMARK
- LEDGES
- LEESVILLE
- LEETONIA
- LEXINGTON
- LISBON
- MACEDONIA
- MADISONBURG
- MAGNOLIA
- MANTUA
- MARION
- MCKNIGHTS
- MEANDER
- MEDINA
- MILTON LAKE
- MINERAL RIDGE
- MINERVA
- MOGADORE
- MOHAWK
- MOHICANVILLE
- MORELAND
- MORGAN
- MOSIER
- NEGLEY
- NIMISILA
- NOBLE
- NORTH LIMA
- NORTH STRASBURG
- NORTH WAYNE
- NORTH WELLSVILLE
- NORTON
- OLD FORGE
- OSAGE
- PAGE
- PETERSBURG
- PLAZA STREET
- PORTAGE
- PORTAGE LAKES
- PROMWAY
- PROSPECT
- QUARRY
- RANDOLPH
- RAVENNA
- REAVER
- RIPLEY
- RITTMAN
- RIVERSIDE
- ROUSE
- RYAN
- SACKETT
- SALEM
- SALINEVILLE
- SAUER
- SCHAFRATH SWITCH
- SEVILLE
- SLOANE
- SMITH ELECTRICAL
- SOUTH CADIZ
- ST. THOMAS HOSPITAL
- STILLWELL
- STONER
- STONEY
- SUGAR CREEK
- SUGARCREEK
- SUMNER
- TALLMADGE
- THORNTON
- TIMKEN RICHVILLE
- TRAIL
- TREAT
- TWINSBURG
- WALDO
- WARWICK
- WATER
- WAYVIEW
- WEST AUSTINTOWN
- WEST MEDINA
- WEST MELROSE
- WEST RICHFIELD
- WEST SALEM
- WESTVILLE
- WHITEHOUSE
- WINDHAM
- WOODVILLE
- WYOGA
- ZANE
- ZEDAKER
Frequently asked questions
How many electric substations are in Ohio?
HIFLD records 2,565 substations in Ohio, of which 465 carry a station name. That is the 11th-most named substations of any state in the dataset.
What is the highest-voltage substation in Ohio?
8 named substations in Ohio share the top voltage of 765 kV, including CORRIDOR, DON MARQUIS 765 KV, FLATLICK.
Which substation in Ohio connects the most transmission lines?
JUNIPER has the most connected transmission lines of the named substations listed here, with 19 at up to 345 kV.
How many substations in Ohio are 345 kV or higher?
60 of 465 named substations (13%) operate at 345 kV or above, compared with 8% nationally. Ohio ranks 4th of 50 states and DC for named substations at that level.
How many datacenter candidate sites in Ohio are at substations?
835 of the 3,933 scored candidate sites in Ohio are substation sites — locations generated at an existing substation. Scored sites across Ohio average 53.2 on the 0–100 DC Readiness scale, against 53 nationally.
Looking for a specific record? The directory lists every substation in Ohio, A to Z.
More on Ohio, 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 Ohio”, https://gridcensus.com/substations/ohio (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 Ohio 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.