Joint Market Seams: Registration for 10/22/26 workshop now open

The fourth market seams workshop, held jointly by California ISO (ISO) and Southwest Power Pool (SPP), has been scheduled for Oct. 22, 2026, 9 A.M. - 2:30 P.M. Mountain Daylight Time. This will be the fourth workshop in a 4-part series on market seams that explores key issues with industry experts and interested parties. This meeting is hybrid with in-person participation in Salt Lake City at the Western Electricity Coordinating Council (WECC) office. If you plan to attend in person, please click here to register.

The upcoming Oct. 22, 2026, workshop will focus on follow-up topics from the previous three workshops and discussion of the roadmap and next steps. It will feature a discussion of the Joint report under FERC Docket No. AD26-10-000, including the plan and next steps going forward. 

This 4-part seams series addresses principles, problem statements, and technical exploration of market seams issues. We welcome stakeholders from across the West to join the discussion at these workshops. Panels will feature market participants from across the region and market experts for both Extended Day-Ahead Market (EDAM) and SPP’s Markets+.

For meeting materials, including the recommended hotels, please visit the Market Seams meeting webpage. The workshop will be recorded and the video file posted to the webpage. The recording is for informational and convenience purposes only, and any related transcriptions should not be reprinted without the ISO’s permission.

Please submit stakeholder comments on the Oct. 22, 2026, workshop by visiting the Market Seams page linked above and complete the comment template Word document. Upon completion of this template, please submit it to isostakeholderaffairs@caiso.com. Written comments are due by end of day Nov. 5, 2026.

Meeting information