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March 10, 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.
CAISO
CAISO Reevaluating WEIM Resource Sufficiency Test
The Western Energy Imbalance Market Governing Body and CAISO Board of Governors were briefed on proposed changes to the WEIM resource sufficiency test.
CAISO
CAISO Board Elects New Leaders
In their last meeting of 2021, the CAISO governors elected a new chair and funded technology upgrades to settle billions of dollars in transactions annually.
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Court Overturns FERC on CAISO CPM Rates
The D.C. Circuit Court of Appeals said FERC erred in basing its decision on CAISO capacity procurement payments on a prior ruling.
NextEra Energy Resources
CAISO Proposes Paying Storage Differently
CAISO proposed paying batteries to stay charged during the day in readiness for summer evening peaks to maintain resource adequacy in Western heat waves.
U.S. Forest Service
California PUC Levies $550M on Edison for Wildfires
The CPUC fined Southern California Edison $550 million for major wildfires in 2017-18 and approved the utility's new $1.3 billion storage project.
Shutterstock
CARB Explores Benefits, Hurdles to Decarbonizing Homes
A CARB workshop brought together experts to discuss what it will take to decarbonize California's residences.
Shutterstock
California PUC Proposes New Net Metering Plan
The California PUC issued a highly anticipated and controversial proposal to revamp the way rooftop solar customers are paid for surplus generation.
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Biden Appoints California PUC Commissioner to Head EPA Region 9
EPA announced that President Biden intends to name California Public Utilities Commissioner Martha Guzman Aceves as administrator of the agency's Region 9.
Public Service Company of New Mexico
New Mexico Regulators Reject Avangrid-PNM Merger
N.M. regulators shot down Avangrid’s proposed acquisition of PNM Resources after officials pointed to Avangrid’s “demonstrated record of poor performance.”
LADWP
LADWP on ‘Crash Course’ to Generate with Green Hydrogen
The Los Angeles Department of Water and Power is betting big on generating electricity with green hydrogen out of sheer necessity, its top official said.

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