Western Energy Imbalance Market (WEIM)

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West Entered Pivotal Period for RTO Development in 2023

Future historians of the U.S. electricity sector one day might conclude the development of an RTO in the West hinged on two separate but interrelated events occurring on one day in July 2023.

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CAISO Wins (Nearly) Sweeping FERC Approval for EDAM
CAISO marked a key milestone in its Western expansion efforts after FERC approved nearly every aspect of its proposed Extended Day-Ahead Market.
Westside Governance Pathways Initiative
Western RTO Initiative Outlines Governance Options
The group working to establish a single Western RTO heard summaries of five potential options for a new governing body that could be independent of CAISO.
CAISO
CAISO DMM: High Exports to Southwest Led to July EEAs
CAISO's Department of Market Monitoring explained that self-scheduled exports to support stressful conditions led to the declaration of emergency alerts in July.
TransCanyon LLC
‘Missing Pathway’ Advancing Through Approval Steps in West

The proposed Cross-Tie transmission project is moving through the federal approval process with a targeted in-service date in 2027.

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Region Still Split as BPA Approaches Day-ahead Market Decision
The Bonneville Power Administration is pulling back from its ambitious schedule for choosing which Western day-ahead market it will join, officials with the federal power marketing administration said during a workshop.
Shutterstock
Western RTO Group Seeking $800K in DOE Funding
The West-Wide Governance Pathways Initiative is seeking $800,000 in federal grants to support its administrative and outreach needs as it works to lay the foundation for an independent Western RTO.
BPA
Study Shows Uneven Benefits for California, Rest of West in Single Market

The results from a WMEG study indicate that many entities outside California would see more benefits from a two-market outcome while the Golden State has the most to lose from such a split.

PNM
New Mexico Contemplates Organized Market Choice
When it comes to choosing between Western day-ahead market offerings, who else is participating in the market is a key consideration, a representative of a New Mexico utility said.
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Stakeholders: Pathway Initiative Offers ‘Fresh Look’ at Western Market
Western stakeholders expressed enthusiasm for the West-Wide Governance Pathway Initiative but called for more transparency in developing a regional market.

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