Search
March 18, 2026

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.
UPDATED: PG&E Ends Bond Bid as SF Makes Wires Offer
PG&E Corp. said it was postponing a controversial effort to secure up to $20 billion in bonds from the state to pay for wildfires sparked by its equipment.
Colorado Utilities Examine Market Membership
Four Colorado utilities announced they were evaluating joining either CAISO's or SPP's energy imbalance market with the help of a consulting firm.
EIM Attracts More BANC Members, WAPA Region
Three BANC members and WAPA’s Sierra Nevada division jointly announced they intend to join CAISO's Western Energy Imbalance Market.
Calif. Participants Float ‘Central Buyer’ RA Plan
California stakeholders have proposed replacing the state’s resource adequacy framework with a “central buyer” responsible for procuring resources.
Isolation, Illiquidity Drove Avista’s EIM Decision
Avista's [NYSE:AVA] Scott Kinney explained the factors that led to the utility's decision to join CAISO's EIM during the market’s Regional Issues Forum.
EIM Governing Body Gains Member, Loses Another
The EIM Governing Body voted unanimously to confirm new member Anita Decker, but Chair Carl Linvill also announced the resignation of member Travis Kavulla.
PG&E Bankruptcy Split into Three Parts
The judge overseeing PG&E's bankruptcy relinquished a major part of the case to another federal judge while a third part is heading to state court.
PG&E Seeks $20B Wildfire Bonds Issuance
PG&E is hoping the California legislature will approve a bill providing up to $20 billion in bonds to help the company pay its debts to wildfire victims.
CAISO Stakeholders Split on Market Power Efforts
Members of CAISO’s Market Surveillance Committee and stakeholders wrangled over systemwide market power and ways to limit it.
Only PG&E Can File Bankruptcy Plan, Judge Says
The judge overseeing PG&E’s bankruptcy ruled against bondholders and insurers that wanted to offer their own reorganization plans for the embattled utility.

Want more? Advanced Search