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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.
LEAPS’ Bid for Tx Status Rebuffed Again
FERC again rejected a bid by developers to obtain transmission status and cost-based rates for a proposed $2 billion pumped storage project in CAISO.
PG&E Says Blackouts Will Continue
PG&E told regulators its public safety power shutoffs could continue for another decade, and is making plans to turn off electricity if and when necessary.
Tucson Electric Power Maintains MBRA
TEP retained its right to sell power at market-based rates after FERC concluded it does not exercise market power within its balancing authority area.
SCE Suspected in Fire, PG&E Says Shutoffs Worked
SoCal Edison came under increasing scrutiny for its possible role in starting the Saddleridge Fire, while PG&E defended its public safety power shutoffs.
PG&E Restores Power amid Backlash
PG&E restored power to 738,000 customers after its public safety power shutoffs prompted a backlash from the public, state regulators and elected officials.
CPUC Orders Changes to PG&E Shutoff Rules
California officials ordered changes to PG&E's precautionary power shutoff rules and demanded refunds for customers affected by last week's blackouts.
Transmission Developer Calls for Closer Look at NorthernGrid
A proposed merger of two Northwest transmission planning groups into NorthernGrid has won over state regulators, but LS Power wants a FERC tech conference.
Calif. Regulators Bash PG&E’s Power Shutoffs
As roughly 600,000 Pacific Gas and Electric customers remained without power, the president of the California PUC called the situation “unacceptable.”
RTO Responses Reveal Uneven Landscape for DERs
CAISO, ISO-NE and NYISO look to be the pacesetters in opening the country’s organized electricity markets to greater participation by DERs.
UPDATE: Judge Admits Takeover Plan as PG&E Starts Blackouts
PG&E shut down power to large swaths of its Northern California service territory, citing gusty winds that could cause utility-sparked conflagrations.

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