Updated Wheeling Access Charge Rates effective 6/1/26

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 June 1, 2026	STARTRANS IO, LLC’ 2026 TRR information under Docket Numbers ER26-302	31-Dec-25

Rates effective June 1, 2026:

June 30, 2026 – T+9B Initial Statement
June 1, 2026 – T+70B Recalculation Statement

Contact information

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