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April 24, 2025

Open Access Transmission Tariff (OATT)

CAISO
CAISO Issues ‘Expedited’ Plan for Allocating EDAM Congestion Revenues
CAISO released a draft final proposal detailing how EDAM will allocate congestion revenues in circumstances when a transmission constraint in one BAA produces “parallel” flows in a neighboring BAA also participating in the market.
CAISO
Urgent EDAM Congestion Revenue Issue ‘Will Take Time’ to Address
The complex issue regarding congestion revenue allocation in CAISO’s Extended Day-Ahead Market continues to raise questions and cause some confusion for market participants.
CAISO
Fast-paced Effort will Address EDAM Congestion Revenue Issue
CAISO launched an “expedited” initiative to address stakeholder concerns about how EDAM will allocate congestion revenues when a transmission constraint in one balancing authority area causes congestion in a neighboring BAA.
Powerex
Powerex Paper Sparks Dispute over EDAM ‘Design Flaw’
The new paper from Powerex is likely to reignite the debate between supporters of CAISO’s Extended Day-Ahead Market and SPP’s Markets+ just as the competition between the two markets approach critical junctures.
Powerex
Powerex to Cancel Rights on PacifiCorp Tx System over EDAM Changes
Powerex intends to terminate a large portion of its rights on PacifiCorp’s transmission system in response to the utility’s plans to update its transmission tariff to align with CAISO’s EDAM.
Western Area Power Administration
WAPA Tariff Falls Short of Reciprocity Status, FERC Finds
The Western Area Power Administration’s non-jurisdictional Open Access Transmission Tariff does not meet the standard of an “acceptable reciprocity tariff,” despite recent revisions the federal power agency incorporated into the tariff, FERC ruled.
CAISO
CAISO Finalizing Plan for WEIM EDAM
CAISO's draft final proposal for a day-ahead expansion of its Western Energy Imbalance Market is up for review this month, with a final plan due in December.
SEEM
SEEM Members Launch Engagement Series for Participants
Southeast Energy Exchange Market members launched an informational webinar series for participants prior to the start of market trials in late summer.
SEEM
FERC Again Rejects Efforts to Overturn SEEM
FERC turned down another set of challenges to the Southeast Energy Exchange Market filed by environmental, clean energy and consumer groups.
© RTO Insider LLC
CAISO Working Groups Start EDAM Design
Three stakeholder working groups charged with designing key elements of CAISO’s proposed extended day-ahead market for the Western EIM began meeting this week.

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