Storage Design and Modeling: Additional Headroom Limit examples posted, comment deadline extended to 4/3/26

Key metadata

Signal ID

793554fbd33639615260

Category

process

Source

CAISO

Published at

2026-04-03T00:00:00Z

Original source

CAISO

Summary

The California ISO has posted additional examples related to the Headroom Limit topic, which is part of the Issue Paper and Straw Proposal on Mixed-Fuel Resources under the Storage design and modeling initiative. To allow stakeholders to consider this new information, CAISO has extended the deadline for written comments. Comments on the Issue Paper and Straw Proposal, as well as all topics from the March 16, 2026, stakeholder discussion, are now due by April 3, 2026.

Why it matters

This action signals active CAISO work on storage participation rules and modeling assumptions, particularly concerning mixed-fuel resources and headroom limits. Such changes could influence how storage assets are modeled, bid, and dispatched in the California market. This may impact their operational flexibility and value capture mechanisms.

Source excerpt

The California ISO has posted additional examples related to the Headroom Limit topic discussed within the Issue Paper and Straw Proposal on Mixed-Fuel Resources on the Storage design and modeling initiative webpage . To allow for stakeholders to consider this new information in their written comments, the ISO has extended the deadline to submit written comments on the Issue Paper and Straw Proposal on Mixed-Fuel Resources and all topics discussed in the March 16, 2026, stakeholder discussion. Written comments are now due April 3, 2026.