CAISO/WEIM
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The California Independent System Operator serves about 80% of California's electricity demand, including the service areas of the state's three investor-owned utilities. It also operates the Western Energy Imbalance Market, an interstate real-time market covering territory that accounts for 80% of the load in the Western Interconnection.
CAISO’s adoption of the Pathways Initiative’s “Step 1” changes won't overcome BPA’s objections to the governance of the ISO’s EDAM, Administrator John Hairston told U.S. senators from the Pacific Northwest.
A new study may dispel the notion that New Mexico utilities must follow the day-ahead market choice of their Arizona counterparts in order to realize benefits from market participation.
CAISO dove into Track 3 of its Interconnection Process Enhancements initiative as staff and stakeholders grappled with how to solve problems related to allocating transmission plan deliverability.
The Western Resource Adequacy Program’s key stakeholder body approved a plan that would postpone the start of its penalty phase by one year, to summer 2027.
Enhanced protections against uncompetitive market behavior are among several tools to ensure fair and accurate pricing under a Markets+ framework, according to the latest "issue alert" from entities that back its development.
The Bonneville Power Administration will delay its decision on choosing between SPP’s Markets+ and CAISO’s Extended Day-Ahead Market until May 2025.
A single Western market is one of the safest bets to address the region’s reliability and cost issues in the face of extreme weather events, proponents of the West-Wide Governance Pathways Initiative said during a panel discussion.
The D.C. Circuit ruled in favor of Pacific Gas and Electric in the latest twist in a nearly two-decade dispute with the San Francisco over a distribution system wheeling contract between the two entities.
A new initiative to streamline and expand bilateral trading in the Western Energy Imbalance Market and Extended Day-Ahead Market has been launched, marking another step toward EDAM implementation.
Responding to stakeholder pushback, CAISO has extended the timeline of its initiative refining bid cost recovery provisions for storage resources to allow for more discussion.
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