Updated Wheeling Access Charge Rates effective 6/1/25

The California ISO has posted the following updated wheeling access charge rates effective as noted below on its settlements webpage, under the Transmission access charge (TAC) rates/Wheeling access rates/Wheeling rates 2025 subheadings.

These rates will be included in the settlement calculation of transmission access charge transactions starting on the following trade dates:

Wheeling Access Rates	FERC Order	FERC Order Date
Rates effective June 1, 2025	San Diego Gas & Electric’s 2025 TRR information under Docket Number ER25-270	n/a

Rates effective June 01, 2025:

Aug 26, 2025 - T+9B Initial Statement
Jun 09, 2025 – T+70B Recalculation Statement
Jun 01, 2025 – T+11M Rerun Statement

Contact information

Please contact ISO Customer Service at 916-608-7320 with any questions.