Updated Wheeling Access Charge Rates effective 1/1/26

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 2026 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 Jan. 1, 2026

San Diego Gas & Electric’s 2026 TRR information under Docket Number ER26-632 and TRBAA information under Docket Number ER26-336

1-Dec-26

22-Jan-26

Rates effective Jan. 1, 2026:

Sep. 1, 2026 – T+9B Initial Statement
June 12, 2026 – T+70B Recalculation Statement
Jan. 1, 2026 – T+11M Recalculation Statement

Contact information

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