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.
CPUC Applies Stricter Oversight to PG&E
California's PUC used its new enhanced oversight & enforcement powers for the first time against PG&E, citing the utility’s failure to weigh wildfire risks.
CEC Funds Cutting Edge Load Flexibility Project
The CEC has taken a step toward making millions of households part of demand response efforts designed to avoid blackouts.
West Needs to Add Transmission for Renewables, CEOs Say
Western states must work together to build transmission avoid blackouts, Idaho Power CEO Lisa Grow and CAISO CEO Elliot Mainzer agreed.
Wildfires Bolster Case for Biomass Energy in California
Some California lawmakers want the woody biomass from forest thinning efforts to be used for electricity generation.
Prosecutors Charge PG&E for 2019 Kincade Fire
The Sonoma County District Attorney’s office filed 33 criminal charges against Pacific Gas and Electric in connection with the Kincade Fire.
CAISO’s 1st System RMR Agreement Set for Hearing
FERC sent CAISO’s first systemwide RMR agreement to settlement proceedings after the ISO raised questions about the contract's fairness.
Conflict over Power Shutoffs Grows in California
Debate over using large-scale blackouts to prevent wildfires in California has become more urgent as the state heads into another fire season.
Expansion Takes EIM into LA, New Mexico
CAISO’s Western EIM notched another milestone as it welcomed the country’s largest municipal utility and extended its border to include much of New Mexico.
NARUC Report Examines California RA Problems
A NARUC report says California will need to use more advanced planning methods to ensure resource adequacy with an ever-growing reliance on renewables.
CPUC, CAISO Take Major Steps for Summer Reliability
The CPUC and CAISO instituted new resource adequacy requirements and conservation programs in preparation for the coming summer.

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