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March 19, 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 Department of Market Monitoring
CAISO Q1 Prices Surge on Lower Hydro, Higher Gas
CAISO prices surged in Q1 on falling hydroelectric output and increased costs for natural gas, the ISO’s Department of Market Monitoring told stakeholders.
FERC OKs Tighter Rules for CAISO CRR Auction
FERC approved changes to CAISO’s congestion revenue rights auction, rejecting protesters' complaints that they eliminate legitimate hedging opportunities.
CAISO
CAISO Puts $18.5 Million Price Tag on RC Services
CAISO projects it will cost as much as $18.5 million to provide reliability coordinator services to areas outside its balancing authority.
© RTO Insider
Commenters Divided on DER Aggregation, State, LDC Roles
Solar power and energy storage providers differed with LDCs and state officials in comments filed at FERC on Disributed Energy Resource aggregation.
California State Senate
CAISO Regionalization Bill Edges Toward Senate Vote
The CAISO regionalization bill that would transform CAISO into an RTO passed another key California State Senate committee.
U.S. Army Corps of Engineers
FERC Partially OKs CAISO Commitment Cost Enhancements
Use-limited resources will be allowed to attach opportunity cost adders to their bids in CAISO’s energy market under a proposal approved by FERC.
CPUC Denies Pipeline, Inquires About Others
The CPUC rejected an application by SDG&E and SoCalGas to build a $639 million pipeline near San Diego, saying it was unneeded.
FERC Broadens Challenge to TOs’ Tax Calculations
FERC identified 13 additional transmission owners it said should change accounting practices that could inflate rates by underestimating tax credits.
Southwire
FERC Denies WestConnect’s Order 1000 Rehearing Request
FERC denied a rehearing request of its November 2017 order on remand regarding transmission cost allocation in the WestConnect planning region.
CAISO Board Approves More CRR Auction Changes
CAISO’s Board of Governors approved revisions to the ISO’s congestion revenue rights auction, and the EIM Governing Body approved Travis Kavulla as a member.

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