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 Gets $1.3B Rate Hike, Cancels Mass Blackouts
PG&E canceled its anticipated blackouts after saying it might shut off power to nearly 400,000 residents to prevent wildfires.
New CAISO CEO Vows Urgency on Resource Adequacy
CAISO's new CEO, Elliot Mainzer, spoke with RTO Insider about his background, priorities and perspective on California's resource adequacy problem.
PG&E Faces ‘Enhanced Oversight’ by CPUC
The California PUC might implement the strict regimen of oversight and enforcement that PG&E agreed to last year as part of its bankruptcy plan.
CAISO Wasn’t Gamed in Blackouts, Watchdog Finds
CAISO’s Market Monitor found no evidence of market manipulation or strategic outages during the rolling blackouts of mid-August.
CPUC Tries to Head off Summer Blackouts
The California Public Utilities Commission opened a proceeding to help prevent summer blackouts like those in August and September.
Oregon PUC
Oregon PUC Plans Take on Decarbonization
A special public meeting of the Oregon PUC illustrated the complexity of issues at play when putting a decarbonization plan into practice.
CAISO Governors Honor Olsen
The CAISO board praised the work of retiring colleague David Olsen and adopted the second phase of its hybrid resource plan.
FERC Accepts CAISO Co-located Resources Plan
FERC approved a CAISO plan meant to allow co-located resources to connect to the grid more quickly and seamlessly in the coming months.
Whirlpool
Struggling PG&E Nabs CMS Energy’s CEO
CMS Energy CEO Patti Poppe will depart the Michigan-based utility to become CEO of California’s besieged PG&E, the companies announced.
Initiative Seeks to Fuel Use of Green Hydrogen in West
The push to develop green hydrogen got a boost with the announcement of a program to hasten its development in the Western Interconnection.

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