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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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WEIM Withdraws Change to Base Schedule Deadline

CAISO’s Western Energy Imbalance Market took the unusual step of rescinding a rule change that it never actually implemented.

CAISO
CAISO Board OKs Plan to Admit Subscriber-funded Transmission Lines

The CAISO board approved a proposal that will allow transmission projects outside California to join the ISO under a new subscriber-funded model that avoids allocating costs to ISO load-serving entities.

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Regulators Propose New Independent Western RTO
The competition for organized markets in the West grew Friday as the Bonneville Power Administration launched a process to choose between day-ahead markets proposed by CAISO and SPP and regulators from five Western states urged the establishment of a new, independent RTO covering the entire West.
Berkeley Lab
Do Batteries or Transmission Produce Greater Benefits?
A new Berkeley Lab report weighs the benefits of storage versus transmission for wind and solar projects.
CAISO
Batteries Multiply in CAISO, Soak up Solar
The more than 5,000 MW of batteries connected to the CAISO grid are playing in increasing role in maintaining reliability, a report from the ISO's Market Monitor shows.
ACEG
Transmission Report Card Grades MISO ‘B,’ Southeast ‘F’
Americans for a Clean Energy Grid gave MISO and CAISO top grades for regional transmission planning and development; PJM and ISO-NE scored poorly.
PacifiCorp
PacifiCorp Says It Can Meet Oregon GHG Targets
PacifiCorp will be able to meet Oregon’s ambitious greenhouse gas emissions reduction targets for electric utilities but “it will not be without challenges,” a company official said.
CAISO/EIA
California Duck Curve Getting Deeper
California's duck curve deepened to new levels this spring as solar capacity increased, at times exceeding demand, the Energy Information Administration said.
Shutterstock
Calif. Governor, Lawmakers Agree on Infrastructure Bills
California Gov. Gavin Newsom and legislative leaders reached a budget deal that includes most of Newsom's controversial energy infrastructure bills.
CAISO
Western EIM Governing Body Gets New Member, Chair
The Western Energy Imbalance Market Governing Body appointed new member Rebecca Wagner and elected a new chair and vice chair from among its members.

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