Electric Transmission
AEPCO transmits wholesale electric power from Apache Generating Station in Cochise, Arizona, to our 6 Class Amember distribution co-ops, which serve members in:
Southern Arizona
Western New Mexico
Northwestern Arizona
Southern California
866
miles of transmission line owned all or in part by AEPCO
36
substations reaching out from Apache Station across Arizona to the northwestern corner of the state
30
telecommunications towers and an extensive fiber network used to communicate between AEPCO operations centers and substations, members, and customers
It takes a solid, reliable system to transmit power from our plant to our member distribution electric co-ops, and on to their 420,000 consumer-members at the end of the line.
Transmission Partnerships Build Electric Reliability
In recent years, AEPCO has built an impressive track record of successful transmission partnerships among:
Transmission Utilities
Distribution cooperatives
This collaboration is rooted in the knowledge that when the right partners come together, there is an opportunity for mutual benefits—reducing costs, improving reliability, and building a stronger system for a community or even an entire region.
AzGT is gathering public comments while planning a new Saguaro-Marana transmission line that will meet new demand in the Marana area served by Member Trico Electric Cooperative.
AzGT plans to purchase a transmission line that runs approximately seven miles from a neighboring utility’s existing Saguaro Substation to Trico EC’s planned Adonis Substation.
A neighboring utility is planning to locate a transmission line on the same poles for a portion of the route.
The public can participate in a virtual open house and submit comments at the Saguaro to Marana Transmission Line Project website.
Learn more via:
The Hilltop Interconnection involving Unisource Electric provides increased reliability and reduces downtime to many communities in Mohave County.
The Valencia Interconnection between AEPCO’s system and the Central Arizona Water Conservation District system provides improved reliability to both systems, as well as in Trico Electric Cooperative’s service territory.
AEPCO, APS and Sulphur Springs Valley Electric Cooperative (SSVEC) are working together to make major investments in new transmission facilities in Cochise County, Arizona, providing increased reliability to the AEPCO and APS transmission systems, and backup services to AEPCO Member SSVEC’s and APS’s distribution service territories.
AEPCO’s portion of the Schieffelin-Tombstone Junction-Boothill Project was recently completed.
Having achieved lower project costs than our industry peers — and a reputation for quality design, construction, safety and timeliness — AEPCO has taken a lead role in most of these projects.
This track record adds significant value to our partnerships and opens the door to future collaboration. These transmission partnerships enable AEPCO to resolve reliability concerns at the lowest cost and maximum benefit for all concerned.
Brandon Guinane, hot stick lineman apprentice, left, and Dustin Benavides, hot stick lineman, prepare to install new crossarm hardware on the Pantano-New Tucson 230-kilovolt line east of Tucson during a structure changeout project.
AzGT’s transmission crew upgrades the Oracle Junction Substation.