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April 4, 2025

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.
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West’s Mounting Challenges Require Increased Coordination, Panelists Say
Regional initiatives aimed at increasing coordination and collaboration among power entities in the West are essential to tackle mounting technical and political challenges, panelists said during a discussion at the spring joint CREPC-WIRAB meeting.
Shutterstock
CAISO CEO, Others Point to Reliability Aspect of BPA’s Market Decision
BPA's day-ahead market decision will have “major reliability and affordability impacts” on electricity customers in the Northwest and across the West, CAISO CEO Elliot Mainzer told the ISO’s Board of Governors
Shutterstock
Newsom Issues Order to Speed Undergrounding of Lines in Los Angeles
California Gov. Gavin Newsom has suspended environmental laws to accelerate the undergrounding and hardening of utility equipment in communities ravaged by the Los Angeles wildfires.
Balise42, CC BY-SA-4.0, via Wikimedia Commons
Pathways Inches Closer to Seating RO Board
The West-Wide Governance Pathways Initiative’s Launch Committee said it hopes to seat a permanent board by either next year or 2027 for the regional organization that will govern energy markets in the West.
SPAN
PG&E Launches Virtual Power Plant, Microgrid Programs
Pacific Gas and Electric will meet some of this year’s summer electricity demand in California through a virtual power plant demonstration project that will include as many as 1,900 residential customers.
CAISO
WEIM Q4 Prices Down on Lower Gas Costs, CAISO DMM Finds
CAISO's Department of Market Monitoring found lower natural gas prices helped drive down energy prices in the WEIM in the fourth quarter of 2024.
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WEIM Experience, Reliability Benefit Drove EDAM Decision, BANC Says
For the Balancing Authority of Northern California, a positive experience with CAISO’s Western Energy Imbalance Market was a key factor in the decision to also join the ISO’s Extended Day-Ahead Market.
CAISO
Fast-paced Effort will Address EDAM Congestion Revenue Issue
CAISO launched an “expedited” initiative to address stakeholder concerns about how EDAM will allocate congestion revenues when a transmission constraint in one balancing authority area causes congestion in a neighboring BAA.
Capital Power
CAISO, EDF Trading Settle Fuel Cost Recovery Dispute
FERC approved a $528,000 settlement that ends a dispute between EDF Trading North America and CAISO over fuel cost recovery.
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Calif. Officials Approve New Safety Measures for Battery Storage
The California Public Utilities Commission voted to approve stricter safety standards on battery storage facilities following a series of incidents at battery facilities.

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