The Role of Transmission in California's Clean Energy Future

California is enhancing its transmission system to facilitate the transition to a reliable, clean, and affordable energy system. The updated system will deliver electricity over long distances, connecting communities across the state to abundant renewable resources located throughout California and the West. By modernizing the transmission system, California will enhance reliability during extreme weather events, decrease reliance on fossil fuel resources, and efficiently interconnect clean energy resources to meet the state’s growing electricity demand.

The following webpages detail the planning, approval, construction, and maintenance processes of California’s transmission system, and provide additional information and links to resources and public processes.

California Transmission System

The Transmission Challenge

Expanding and modernizing transmission infrastructure is key to California’s clean energy future.

Who is Responsible for Transmission?

Transmission planning considers forecasting and anticipated new energy resources, and involves transmission operators and owners

Coordinated Transmission Planning and Project Development

Coordinated transmission planning supports clean energy growth and climate goals.

Tracking and Approving Transmission Projects

The California Public Utilities Commission oversees project approval process and construction.

Transmission Legislation and Implementation Status

Recent bills related to transmission planning and approval in California.