Transmission Agency of Northern California
Transmitting energy to Nor Cal customers
The Transmission Agency of Northern California (TANC) is a joint powers agency established by a group of California publicly-owned utilities in 1984. TANC's initial purpose was to plan, design and construct the California-Oregon Transmission Project (COTP), a 340-mile long, 500-kV AC transmission line between Southern Oregon and Central California. The COTP was completed and energized in 1993.
Today, TANC's primary purpose is to provide electric transmission to its Member utilities through transmission line ownership or contract arrangements. As the project manager for the COTP, TANC is responsible for its day-to-day operation and maintenance as well as upgrades to the line and future planning for new lines.
TANC's current Membership includes 15 publicly-owned utilities in the cities of Alameda, Biggs, Gridley, Healdsburg, Lodi, Lompoc, Palo Alto, Redding, Roseville, Santa Clara, and Ukiah, as well as the Sacramento Municipal Utility District, the Modesto Irrigation District and the Turlock Irrigation District. The Plumas-Sierra Rural Electric Cooperative is an Associate Member.
TANC is a member of WestConnect, wesTTrans, the Western Electricity Coordinating Council (WECC), and the California Transmission Planning Group (CTPG). In addition, TANC is registered with the North American Electric Reliability Corporation (NERC) as a Transmission Owner, Transmission Planner and Transmission Service Provider.