Electric Substations in Arizona
466 named substations in Arizona, 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 Arizona's substation network split by voltage?
By maximum voltage, the named substations break down as 33 at 500 kV and above; 14 at 345–499 kV; 91 at 230–344 kV; 87 at 115–229 kV; 231 at 69–114 kV; 1 below 69 kV; 9 withvoltage not recorded. 10% of Arizona's named substations operate at 345 kV or above, against 8% across all 16,654 named US substations. The state median of 69 kV is below the national median of 115 kV.
How does Arizona compare with other states?
Arizona ranks 10th of 50 states and DC by number of named substations and 6th by named substations at 345 kV or above. It also has 3,816 scored datacenter candidate sites with an average DC Readiness score of 48.5 (national average 53), and an average power sub-score of 34.3 against 37.4 nationally. Most of those sites (3,804) are in the WECC market.
Which substations in Arizona have the highest voltage?
| Substation | Max voltage | Connected lines | Line owner |
|---|---|---|---|
| ABEL | 500 kV | 2 | SALT RIVER PROJECT |
| BROWNING | 500 kV | 6 | SALT RIVER PROJECT |
| CEDAR MOUNTAIN | 500 kV | 2 | ARIZONA PUBLIC SERVICE COMPANY |
| CHOLLA | 500 kV | 9 | ARIZONA PUBLIC SERVICE COMPANY |
| CORONADO | 500 kV | 4 | NAVOPACHE ELECTRIC COOPERATIVE |
| DELANEY | 500 kV | 0 | — |
| DUGAS | 500 kV | 2 | ARIZONA PUBLIC SERVICE COMPANY |
| DUKE | 500 kV | 2 | — |
| DYNERGY ARLINGTON VALLEY ENERGY FACILITY | 500 kV | 2 | ARIZONA PUBLIC SERVICE COMPANY |
| GILA RIVER | 500 kV | 5 | ARIZONA PUBLIC SERVICE COMPANY |
| HARQUAHALA | 500 kV | 1 | ARIZONA PUBLIC SERVICE COMPANY |
| HASSAYAMPA | 500 kV | 11 | ARIZONA PUBLIC SERVICE COMPANY |
| HOODOO WASH | 500 kV | 2 | ARIZONA PUBLIC SERVICE COMPANY |
| JOJOBA | 500 kV | 4 | ARIZONA PUBLIC SERVICE COMPANY |
| KYRENE | 500 kV | 11 | SALT RIVER PROJECT |
| MESQUITE | 500 kV | 2 | ARIZONA PUBLIC SERVICE COMPANY |
| MOENKOPI | 500 kV | 4 | NAVAJO TRIBAL UTILITY AUTHORITY |
| MORGAN | 500 kV | 4 | ARIZONA PUBLIC SERVICE COMPANY |
| NAVAJO | 500 kV | 5 | WAPA-- WESTERN AREA POWER ADMINISTRATION |
| NORTH GILA | 500 kV | 4 | ARIZONA PUBLIC SERVICE COMPANY |
| PALO VERDE | 500 kV | 8 | ARIZONA PUBLIC SERVICE COMPANY |
| PERKINS | 500 kV | 2 | ARIZONA PUBLIC SERVICE COMPANY |
| PINAL CENTRAL | 500 kV | 5 | — |
| PINAL WEST | 500 kV | 4 | — |
| PINNACLE PEAK APS | 500 kV | 13 | ARIZONA PUBLIC SERVICE COMPANY |
| REDHAWK | 500 kV | 2 | ARIZONA PUBLIC SERVICE COMPANY |
| RUDD | 500 kV | 9 | SALT RIVER PROJECT |
| SAGUARO | 500 kV | 9 | ARIZONA PUBLIC SERVICE COMPANY |
| SILVER KING | 500 kV | 4 | — |
| SUGARLOAF | 500 kV | 3 | ARIZONA PUBLIC SERVICE COMPANY |
| TORTOLITA | 500 kV | 6 | ARIZONA PUBLIC SERVICE COMPANY |
| WESTWING | 500 kV | 14 | ARIZONA PUBLIC SERVICE COMPANY |
| YAVAPAI | 500 kV | 5 | ARIZONA PUBLIC SERVICE COMPANY |
| BICKNELL | 345 kV | 3 | — |
| FLAGSTAFF | 345 kV | 4 | ARIZONA PUBLIC SERVICE COMPANY |
| GLEN CANYON | 345 kV | 6 | GARKANE ENERGY COOP, INC |
| GREENLEE | 345 kV | 4 | DUCAN VALLEY ELECTRIC COOPERATIVE |
| LIBERTY | 345 kV | 10 | ARIZONA PUBLIC SERVICE COMPANY |
| MAZATZAL | 345 kV | 1 | ARIZONA PUBLIC SERVICE COMPANY |
| PEACOCK | 345 kV | 5 | — |
| PINNACLE PEAK WALC | 345 kV | 9 | ARIZONA PUBLIC SERVICE COMPANY |
| PREACHER CANYON | 345 kV | 3 | ARIZONA PUBLIC SERVICE COMPANY |
| SOUTH | 345 kV | 7 | TUCSON ELECTRIC POWER COMPANY |
| SPRINGERVILLE | 345 kV | 7 | NAVOPACHE ELECTRIC COOPERATIVE |
| TUCSON | 345 kV | 5 | TUCSON ELECTRIC POWER COMPANY |
| VAIL | 345 kV | 9 | TUCSON ELECTRIC POWER COMPANY |
| WINCHESTER | 345 kV | 3 | SULPHUR SPRINGS VALLEY ELECTRIC COOPERATIVE |
| AGUA FRIA | 230 kV | 0 | — |
| AGUA FRIA | 230 kV | 17 | SALT RIVER PROJECT |
| ALEXANDER | 230 kV | 9 | — |
| ANDERSON | 230 kV | 7 | SALT RIVER PROJECT |
| APACHE | 230 kV | 6 | SULPHUR SPRINGS VALLEY ELECTRIC COOPERATIVE |
| BLACK MESA | 230 kV | 2 | — |
| BRANDOW | 230 kV | 7 | SALT RIVER PROJECT |
| BUCKEYE | 230 kV | 5 | ARIZONA PUBLIC SERVICE COMPANY |
| BUTTERFIELD | 230 kV | 3 | SULPHUR SPRINGS VALLEY ELECTRIC COOPERATIVE |
| CACTUS | 230 kV | 5 | ARIZONA PUBLIC SERVICE COMPANY |
| CASA GRANDE | 230 kV | 4 | ARIZONA PUBLIC SERVICE COMPANY |
| COCONINO | 230 kV | 4 | ARIZONA PUBLIC SERVICE COMPANY |
| COOLIDGE | 230 kV | 6 | ARIZONA PUBLIC SERVICE COMPANY |
Every named substation in Arizona
All 466 named substations, grouped by voltage band.
500 kV and above · 33
- ABEL
- BROWNING
- CEDAR MOUNTAIN
- CHOLLA
- CORONADO
- DELANEY
- DUGAS
- DUKE
- DYNERGY ARLINGTON VALLEY ENERGY FACILITY
- GILA RIVER
- HARQUAHALA
- HASSAYAMPA
- HOODOO WASH
- JOJOBA
- KYRENE
- MESQUITE
- MOENKOPI
- MORGAN
- NAVAJO
- NORTH GILA
- PALO VERDE
- PERKINS
- PINAL CENTRAL
- PINAL WEST
- PINNACLE PEAK APS
- REDHAWK
- RUDD
- SAGUARO
- SILVER KING
- SUGARLOAF
- TORTOLITA
- WESTWING
- YAVAPAI
345–499 kV · 14
230–344 kV · 91
- AGUA FRIA
- AGUA FRIA
- ALEXANDER
- ANDERSON
- APACHE
- BLACK MESA
- BRANDOW
- BUCKEYE
- BUTTERFIELD
- CACTUS
- CASA GRANDE
- COCONINO
- COOLIDGE
- CORBELL
- COUNTRY CLUB
- DAVIS
- DEER VALLEY
- DESERT BASIN
- DINOSAUR
- DOS CONDADOS
- EAGLE EYE
- EL SOL
- ENCANTO
- FOOTHILLS
- GAVILAN PEAK
- GILA BEND
- GLENDALE
- GOLDFIELD
- GRAND TERMINAL
- GRIFFITH
- HACKBERRY
- HARCUVAR
- HARRIS
- HASSAYAMPA TAP
- HILLTOP
- IRVINGTON
- KAYENTA
- KNOX
- LEUPP
- LINCOLN ST NORTH
- LINCOLN ST SOUTH
- LINCOLN ST WEST
- LONE BUTTE
- LONE PEAK
- LONGHOUSE VALLEY
- MARICOPA
- MCCONNICO
- MEADOWBROOK
- MILLIGAN
- MINERAL PARK
- MOHAVE ELECTRIC
- MORENCI
- NEW WADDEL
- NORTH HAVASU
- OCOTILLO
- ORME
- PALM VALLEY
- PANTANO
- PAPAGO BUTTES
- PINNACLE PEAK SRP
- RACEWAY
- RANDOLPH
- REACH
- RED TAIL
- RIVIERA
- ROGERS
- ROUND VALLEY
- SAHUARITA
- SAN RAFAEL
- SANTA ROSA
- SANTAN
- SCHRADER
- SELIGMAN
- SOLANA
- SOUTHPOINT
- SUNDANCE
- SUNNY SLOPE
- SURPRISE
- TAT MOMOLI
- TEST TRACK
- THUNDERSTONE
- TOPOCK
- UNISOURCE GOLDEN VALLEY
- VERDE
- WARD
- WEST PHOENIX
- WEST PHOENIX
- WEST PHOENIX
- WHITE TANKS APS
- WHITE TANKS SRP
- WILLOW LAKE
115–229 kV · 87
- BOUSE
- DOME TAP
- GILA
- HEADGATE ROCK
- KOFA
- WELTON MOHAWK
- YUCCA
- 22ND ST
- AS&R MISSION
- CANOA RANCH
- CIENEGA
- DEL CERRO
- DEMOSS
- DREXEL
- DURANGO
- DUVAL CLEAR
- EAST LOOP
- FORT HUACHUCA
- GREEN VALLEY
- LA CANADA
- LOS REALES
- MIDVALE
- NORTH EAST
- NORTH LOOP
- PANTANO
- PD SIERRITA
- PETRIE
- RANCHO VISTOSO
- RILLITO
- ROBERTS
- ROBERTS BILLS-WILMONT
- SANTA CRUZ
- SNYDER
- SPANISH TRAIL
- WEST INA
- ADAMS
- ASARCO
- AVRA VALLEY
- BLACK MOUNTAIN
- BRAWLEY
- CANEZ
- CAP SANDARIO
- CARLOTA
- CARREL
- DEL BAC
- ELLISON
- FRAZIER
- HAYDEN
- HORSE MESA DAM
- KANTOR
- KARTCHNER
- KEARNY
- KNOLL
- MARANA
- MARANA TAP
- MIAMI
- MOONSHINE
- MORMON FLAT DAM
- MORRIS
- MURAL
- NOGALES
- OAKFLAT
- ORACLE JUNCTION
- PINAL
- PINTO VALLEY
- POWELL
- RAMSEY
- RATTLESNAKE
- RAY
- ROOSEVELT DAM
- SADDLEBROOKE RANCH
- SAN MANUEL
- SAN XAVIER
- SANDARIO
- SNYDER HILL
- SONOITA
- SPENCER
- SPURLOCK
- STEWART MOUNTAIN DAM
- SUPERIOR
- THORNYDALE
- THREE POINTS
- TRASK
- TWIN PEAKS
- VALENCIA
- VALENCIA
- VALLEY FARMS
69–114 kV · 231
- UNISOURCE COYOTE BREAKER SUBSTATION
- 23RD ST
- 32ND ST.
- 40TH PLACE
- 56TH
- ACOMA
- ADOBE
- ALAMEDA
- ALHAMBRA
- ALPINE
- ALTADENA
- ALTAVISTA
- APACHE
- AQUEDUCT
- ARABY
- ARCADIA
- ARIZONA
- ARROWHEAD
- ARROYO
- ARROYO TAP
- AUSTIN
- BAJA
- BAJA TAP
- BALL
- BARCELONA
- BARTLETT
- BASELINE
- BASELINE
- BASSHAM
- BEARDSLEY
- BEARDSLEY TAP
- BEELINE
- BELL
- BINARY
- BISCUIT FLATS
- BOONE
- BROADWAY
- BUCKHORN
- BUFFALO
- BURTON
- CAMEL BACK
- CAMERON
- CANAL
- CARTWRIGHT
- CASHION
- CENTURY
- CHAPARRAL
- CHEATHAM
- CHERYL
- CHRISTY WATER
- CLUFF
- COCOPAH
- COLDWATER
- COLLIER
- COLTER
- CONOVALOFF
- COOK
- COOLEY
- CULBERTSON
- DEADMAN WASH
- DEL RIO
- DESERT SPRINGS
- DIXLETA
- DOBSON
- DOUBLETREE
- DYSART
- EALY
- EAST END
- EASTERN OFFICE
- EGAN
- EVANS
- EVANS CHURCHHILL
- EVERGREEN
- FAIRWAY
- FILLMORE
- FOOTHILLS
- FOUNTAIN
- FREESTONE
- GARFIELD
- GAUCHO
- GERMANN
- GILA
- GLENN
- GLENNBROOK
- GRASMOEN
- GREENBRIER
- GREENWAY
- GREER
- GRISWALD
- HANGER
- HARBOR
- HARMON
- HEARD
- HIGHLINE
- HOHOKAM
- HOKAM
- HONEYWELL
- HOUSTON
- HUGHES
- HUMBUG
- HUNT
- HURLEY
- INDIAN BEND
- INDIAN BEND
- INDIANOLA
- INGLESIDE
- IRVIN
- JACKSON STREET
- JEPSEN
- KAY
- KIRK
- LACY
- LAGUNA
- LAGUNA TAP
- LAKESHORE MINE
- LASSEN
- LEHI
- LEWIS
- LITCHFIELD
- LOMA VISTA
- LUKEFIELD
- MADISON
- MANOR
- MARCOS
- MARINE AIR BASE
- MARINETTE
- MARLETTE
- MARLEY
- MARYVALE
- MCCORMICK
- MCCOY
- MCDOWELL
- MCMICKEN
- MCMULLIN
- MCREYNOLDS
- METRO
- MILLER
- MITTRY
- MONTE CRISTO
- MONUMENT
- MOON VALLEY
- MOORE
- MORCOM
- MOUNTAIN
- NEELY
- NEW RIVER
- NOACK
- NORTH VALLEY
- NORTHERN
- NUTRIOSO
- OLIVE
- ORACLE
- ORANGEWOOD
- PARADISE
- PARKER
- PEBBLE CREEK
- PIMA
- PIMA TAP
- PINKERTON
- PIONEER
- PLEASANT
- QUAIL
- QUECHAN
- QUEEN CREEK
- RAINTREE
- REDONDO
- REED
- RICE
- RIO VERDE
- RIO VISTA
- RITTENHOUSE
- RIVERSIDE
- ROADRUNNER
- ROE
- ROHRIG
- ROSE GARDEN
- ROUND VALLEY
- ROVEY
- RUPPERS
- SADDLEBROOKE
- SAGE
- SANDERSON
- SANGUINETTI
- SARIVAL
- SAYLOR
- SEARGEANT
- SEATON
- SHANNON
- SHAW
- SHEELY
- SHERMAN STREET
- SIGNAL BUTTE
- SINNOTT
- SKUNK CREEK
- SLAVENS SUBSTATION
- SOUTH O'NEIL
- SOUTHERN
- SPARTAN
- STADIUM
- STAPLEY
- SUNSET
- SUPERSTITION
- TARTESSO
- TAVAN
- TEMPE
- TEMPE
- TENNEY
- TENTH ST.
- THOMPSON PEAK
- THOMPSON PEAK TAP
- TOLBY
- TOVREA
- TURF
- TWEEDY
- UNION HILLS
- UNISOURCE SQ HI
- UNIVERSITY
- VALENCIA
- VENTURE
- VERDE
- WALDRIP
- WARM SPRINGS TAP
- WASSER
- WATKINS
- WEILER
- WESTBROOK
- WESTWOOD
- WILKINS
- WILLIAMS FIELD
- WOOD
- YALE
below 69 kV · 1
voltage not recorded · 9
Frequently asked questions
How many electric substations are in Arizona?
HIFLD records 892 substations in Arizona, of which 466 carry a station name. That is the 10th-most named substations of any state in the dataset.
What is the highest-voltage substation in Arizona?
33 named substations in Arizona share the top voltage of 500 kV, including ABEL, BROWNING, CEDAR MOUNTAIN.
Which substation in Arizona connects the most transmission lines?
AGUA FRIA has the most connected transmission lines of the named substations listed here, with 17 at up to 230 kV.
How many substations in Arizona are 345 kV or higher?
47 of 466 named substations (10%) operate at 345 kV or above, compared with 8% nationally. Arizona ranks 6th of 50 states and DC for named substations at that level.
How many datacenter candidate sites in Arizona are at substations?
614 of the 3,816 scored candidate sites in Arizona are substation sites — locations generated at an existing substation. Scored sites across Arizona average 48.5 on the 0–100 DC Readiness scale, against 53 nationally.
Looking for a specific record? The directory lists every substation in Arizona, A to Z.
More on Arizona, 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 Arizona”, https://gridcensus.com/substations/arizona (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 Arizona 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.