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January 11, 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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NW Stakeholders Divided on BPA Timeline for Day-ahead Decision
Electricity sector stakeholders expressed divisions over BPA's plan to pursue an aggressive timeline for deciding whether to join CAISO’s EDAM or SPP’s Markets+.
CAISO
CAISO Sheds Light on October Solar Eclipse Preparations
Sharp growth in California solar resources means the Oct. 14 annular eclipse should have even greater impact than 2017's total eclipses.

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Forum Turnout, Tone Could Signal Growing Support for EDAM
The stars may not yet have aligned for CAISO in the contest to bring an organized electricity market to the West, but key industry players appeared to be doing just that at an ISO event to celebrate the progress of its Extended Day-Ahead Market.
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Backers of Independent Western RTO Seek to Move Quickly
The coalition of utility commissioners that proposed the creation of an independent Western RTO is wasting no time getting the project up and running.
Ken Lund CC-BY-SA-2.0 via Wikipedia Commons
NV Energy Proposes to Convert Valmy Coal Plant to Gas
NV Energy wants to convert its last coal-fired power plant to a gas-fueled facility, as the utility continues to be plagued with cancellations and delays of planned solar projects.  
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BANC Moving to Join CAISO’s EDAM
CAISO scored a potentially important victory when the Balancing Authority of Northern California said it will pursue membership in the ISO’s Extended Day-Ahead Market — and not SPP’s Markets+.
CAISO
Idaho Power Seeks FERC Help with $700K WEIM Fine
Idaho Power asked FERC to overturn a $700,000 fine for what it called a minor metering mistake that had no real impact on the Western Energy Imbalance Market.
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CAISO Stakeholders Lament Challenges of Gas Procurement
CAISO’s gas resource management working group is exploring challenges related to participation in ISO-run markets.
CAISO
CAISO Files EDAM Proposal with FERC
CAISO asked FERC to approve the rules for its EDAM and revisions to its existing day-ahead market, intended to more accurately forecast load.
Blade Energy Partners/CPUC
SoCalGas, California PUC Settle Aliso Canyon Case
The California PUC adopted a settlement over the massive natural gas leak at the Aliso Canyon Natural Gas Storage Facility in 2015 that includes a $71 million penalty against Southern California Gas.

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