California ISO Draft 2027 Payments Calendar Posted

The California ISO (ISO) has posted a draft version of the 2027 payments calendar to its Settlements webpage, under the Market and administrative charges heading. 

As requested by Market Participants an Excel and PDF versions of the draft 2027 payments calendar has been posted. In an effort to make the best use of the space on each page on the PDF version, only the relevant publishing timelines will be shown on each month. For reference, a header page showing all publishing timelines is included in the PDF. 

Market participants can review the draft calendar and submit comments for consideration on the final version to SettlementUser@caiso.com by close of business Oct. 9, 2026.

The ISO will post the final version of the 2027 payments calendar to its webpage no later than Oct. 31, 2026.

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