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April 14, 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.
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FERC Approves SCE’s Agreement With Battery Developer
FERC approved an agreement between Southern California Edison and Longroad Development Co. regarding interconnection of a 500-MW battery energy storage project, with one commissioner acknowledging Longroad remains “between a rock and a hard place.”
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EDAM Utilities Seeking Stakeholder Input on RA Program
The group developing a new resource adequacy program for non-CAISO members of the ISO’s Extended Day-Ahead Market is soliciting stakeholder participation to develop a proposal.
Shutterstock
EDAM May 1 Launch on Track Despite Data Challenges
CAISO’s Extended Day-Ahead Market is on schedule to launch May 1 with PacifiCorp as its first participant, as the new market goes through a third and final phase of parallel operations testing before starting.
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FERC Approves CAISO EDAM ‘Transitional’ Intertie Proposal
FERC approved a series of revisions related to the design of CAISO’s Extended Day-Ahead Market to support market implementation and avoid disruptions to existing contracts.
Terra-Gen
Terra-Gen Fined $5M for Using Batteries to Manipulate CAISO Market
FERC fined Terra-Gen nearly $5 million for strategically using its battery storage resources to repeatedly manipulate CAISO’s market over almost two years.
Yes Energy
Spill at Northwest Dams Risks Causing ‘Catastrophic Harm,’ Feds Tell 9th Circuit
Federal agencies urged the U.S. 9th Circuit Court of Appeals to pause a lower court’s order that would increase spill levels at eight dams on the Columbia and Snake rivers, saying the order risks increasing rates and causing costly blackouts.
CAISO
CAISO Draft Tx Plan Includes $1.4B for Project Serving Silicon Valley Large Loads
CAISO’s draft 2025/26 transmission plan proposes more than $1 billion for an infrastructure project that would power new data centers and other large loads in Silicon Valley.
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BPA’s Draft Markets+ Decision Reignites Day-ahead Debate
The Bonneville Power Administration’s draft decision “solidifying” its day-ahead market choice in favor of SPP’s Markets+ has reignited a yearslong debate over the agency’s direction.
CAISO DMM
WEIM Intermountain West Exports Increase 780% in Q4 2025
The Western Energy Imbalance Market’s Intermountain West region saw its hourly exports increase by an average of 780% — or 680 MW — in Q4 2025 versus the same period a year earlier.
California DWR
California Snowpack Near Record Lows as Summer Approaches
Despite a few large storms in January and February, California snowpack levels are near record lows due to a heat dome that settled over the state in March.

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