Western Energy Imbalance Market (WEIM)

Pattern Energy
SunZia Transmission OK’d by Ariz. Regulators
Arizona regulators granted a key approval to the SunZia Transmission project, which would deliver wind energy from central New Mexico into Arizona.
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.
CAISO
WEIM Q3 Benefits Top $500M, Near $3B Total
CAISO's Western Energy Imbalance Market reached a record $526 million in benefits in Q3 and neared $3 billion in cumulative benefits since it started in 2014.
CAISO
CAISO Reports on Summer Heat Wave Performance
CAISO said it avoided September blackouts through a combination of public conservation, imported electricity and coordination with utilities and agencies.
© RTO Insider LLC
CREPC Seeks to Become an OPSI for the West
CREPC wants to advise and advocate for Western states considering organized markets, similar to OPSI's role in PJM.
© RTO Insider LLC
Western Markets Exploratory Group Shares Views
The Western Markets Exploratory Group made a rare public presentation at CREPC-WIRAB of its behind-the-scenes work evaluating market options for the West.
© RTO Insider LLC
FERC Commissioners Opine on Western RTO
Commissioners Mark Christie and James Danly addressed the pros and cons of the West’s pursuit of greater market coordination at the fall CREPC-WIRAB meeting.
Entergy
Texas Public Utility Commission Briefs: Sept. 29, 2022
The Texas PUC has adopted expanded weather preparation rules for generators and transmission utilities during both summer and winter weather events.
© RTO Insider LLC
Ariz. Regulators Probe CAISO on EDAM, Heat Wave Operations
Arizona utility commissioners said they wanted to see more independent governance for CAISO before further committing to the WEIM.
© RTO Insider LLC
CAISO Stakeholders Weigh EDAM Proposal
CAISO stakeholders commented on elements of the revised straw proposal to add an extended day-ahead market to the Western Energy Imbalance Market.

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