Tariff clarifications filing - 2026

Started: Mar 11, 2025

Leads
Sarah Kozal

The ISO performs a recurring tariff clarifications filing to address minor clarifications or updates in the tariff. These tariff clarifications are intended to correct typographical errors, better align definitions and internal section references, and improve section titles, as well as remove outdated language or processes previously addressed by the ISO. This process does not develop new policy.

Status

Development Decision Implementation Completed/Closed


Activities

Web meeting


Second Revision - Extended Day-Ahead Market Enhancements (EDAM) and Day-Ahead Market Enhancements (DAME) - Tariff Clarification Matrix - Jan 09, 2026

Second Revision - Extended Day-Ahead Market Enhancements (EDAM) and Day-Ahead Market Enhancements (DAME) - Tariff Clarification Matrix - Jan 09, 2026

Second Revision - Extended Day-Ahead Market Enhancements (EDAM) and Day-Ahead Market Enhancements (DAME) - Tariff Clarification Redlines - Jan 09, 2026

Second Revision - Extended Day-Ahead Market Enhancements (EDAM) and Day-Ahead Market Enhancements (DAME) - Tariff Clarification Redlines - Jan 09, 2026

Web meeting


Revised Tariff Clarification Matrix - Extended Day-Ahead Market Enhancements (EDAM) and Day-Ahead Market Enhancements (DAME) - Tariff Clarification Matrix - Dec 18, 2025

Revised Tariff Clarification Matrix - Extended Day-Ahead Market Enhancements (EDAM) and Day-Ahead Market Enhancements (DAME) - Tariff Clarification Redlines - Dec 18, 2025

Presentation - Tariff Clarifications - Extended Day-Ahead Market (EDAM) and Day-Ahead Market Enhancements (DAME) - Dec 03, 2025

Extended Day-Ahead Market (EDAM) Enhancements and Day-Ahead Market Enhancements (DAME) - Tariff Clarification Matrix - Nov 04, 2025

View comments

Web meeting


Draft Tariff Matrix - Tariff Clarifications Summer 2025 - Jul 02, 2025 (Revised on Jul 03, 2025)

Presentation - Tariff Clarifications Summer 2025 - Jul 11, 2025

CAISO Response to Comments - Aug 06, 2025

View comments


Response to Stakeholder Comments - Tariff Clarifications Spring 2025 - Apr 01, 2025

Web meeting


Presentation - Tariff Clarifications Spring - 2025 - Mar 28, 2025

Draft Tariff Matrix - Tariff Clarifications Spring 2025 - Mar 19, 2025

View comments