Transmission Data Dashboard 2025

Overview

The Transmission Dashboard, developed by the Public Advocates Office, offers a snapshot of the status of California's electric transmission network infrastructure. It consolidates data from various sources to provide a comprehensive overview of historical, current, and future transmission projects. 

California's ambitious climate goals require a rapid and extensive build-out of the transmission grid to support clean energy sources like wind and solar. However, transmission projects often face significant delays, with the majority of CAISO-approved projects experiencing setbacks and some delays lasting up to 15 years. Slow development timelines threaten the state’s ability to meet its climate and energy goals. Additionally, rising costs, including a potential 200% increase of the Transmission Access Charge, could lead to higher electricity rates for consumers. By visualizing key metrics and trends, the Dashboard aims to inform consumers about the progress and challenges in expanding the state's transmission grid.

We hope the Dashboard will help to bring these issues into focus, identifying bottlenecks and highlighting areas where action is needed to accelerate project completion and control costs.

Download: Transmission Data Dashboard 2025
Dashboard Overview and Data Sources: Transmission Dashboard 2025 Overview/Data Sources