CAISO/WEIM

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.
California Department of Emergency Services
UPDATED: CAISO Seeks to Extend Aliso Canyon Gas Rules Through Winter
CAISO's board has approved a proposal to extend Tariff provisions implemented in June in response to the closure of the Aliso Canyon storage facility.
Utility Planners Confront the Complexity of DER
Optimizing distributed energy resources and reducing greenhouse gas emissions cost effectively will require improved forecasting and the elimination of regulatory silos, speakers told Infocast’s California Distributed Energy Summit last week.
California Regulatory Model Fosters — and Hinders — DER Integration
Last week’s Infocast California Distributed Energy Summit was a crash course in the complexity of developing policies on distributed energy resources.
CAISO Issues Revised Proposal to Expand LSE Definition
CAISO released a final draft proposal to expand the definition of a “load-serving entity” to include organizations purchasing wholesale power to serve their own needs.
Valley Electric Board Approves Sale of 230-kV Network to GridLiance
The Valley Electric Association board of directors approved an agreement to sell the cooperative’s 230-kV transmission network to GridLiance for about $200 million.
CAISO Monitor Seeks Congestion Revenue Rights Auction Reforms
CAISO paid congestion revenue rights holders $27 million more than it took in from CRR auctions during the first half of the year, according to the ISO’s Department of Market Monitoring.
Interior Dept. Approves First Phase of California Desert Renewable Plan
The U.S. Interior Department approved the first phase of the California Desert Renewable Plan, a master plan for developing renewable energy on 10.8 million acres of California desert.
Western Utility Execs Bullish on EIM, Wary of Deeper Integration
Western utility leaders at the CAISO annual stakeholder event said they welcome the operational benefits and increased regional cooperation of the EIM but remain wary of organizing the wider West under a CAISO-run RTO.
Distributed Resources to Reshape Industry, Symposium Panelists Say
The increased adoption of distributed energy resources occupied center stage during the second day of CAISO’s annual Stakeholder Symposium.
Gov. Brown Reaffirms Commitment to Expanded CAISO
Gov. Jerry Brown reaffirmed his commitment to an expanded CAISO, a month after calling for a delay in efforts to complete enabling legislation.

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