Projects and Resource Planning
Generating Station Projects
Black Mountain
New generating resources will support projected growth and economic development in Kingman, Lake Havasu and throughout the Mohave County area. To satisfy growing customer energy needs, UniSource is exploring a possible expansion of facilities at the Black Mountain Generating Station located about 15 miles southwest of Kingman.
Transmission Line Projects
Santa Cruz Reliability
UniSource is preparing plans for new transmission facilities to improve the reliability and resiliency of the electrical transmission system serving Santa Cruz County.
Golden Valley 230 kV
UniSource is developing plans for a double-circuit 230kV transmission line from the Harris Substation to the new Mineral Park Substation to improve reliability, replace aged equipment, and accommodate a projected 5 to 35 megawatt increase in load over the next decade in the north Golden Valley area of Mohave County.
Rio Rico-Harshaw
The Rio Rico-Harshaw Line will involve the construction of an approximately 20-30 mile, single-circuit 138 kV transmission line mounted on steel monopole structures. The project will interconnect UNSE’s existing 138 kV transmission system to the planned Harshaw Substation through a planned 138 kV switchyard in Rio Rico.
Nogales Tap to Kantor Upgrade
The proposed project includes upgrading a 27.5-mile segment of UES’ existing 138-kilovolt (kV) transmission line that serves customers in Santa Cruz County and building a new substation west of Nogales.
Antares to Meadview
UniSource has proposed building a new approximately 10‐mile transmission line to strengthen the local energy grid and improve power quality and reliability for customers in the community of Meadview, located northwest of Kingman, Arizona.
