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December 29, 2025

California Independent System Operator (CAISO)

Interior Dept. Approves First Phase of California Desert Renewable Plan
The U.S. Interior Department approved the first phase of the California Desert Renewable Plan, a master plan for developing renewable energy on 10.8 million acres of California desert.
Distributed Resources to Reshape Industry, Symposium Panelists Say
The increased adoption of distributed energy resources occupied center stage during the second day of CAISO’s annual Stakeholder Symposium.
Gov. Brown Reaffirms Commitment to Expanded CAISO
Gov. Jerry Brown reaffirmed his commitment to an expanded CAISO, a month after calling for a delay in efforts to complete enabling legislation.
CAISO Kicks off Effort to Track GHGs Under Regionalization
CAISO launched an initiative to develop a greenhouse gas accounting system suitable for an expanded ISO.
New Western EIM Participants on Track to Join Market in October
Arizona Public Service and Puget Sound Energy have met the milestones to participate in the CAISO-run Western EIM and will begin trading in the market on Oct. 1.
CAISO Board OKs Grid Services Requirements for Renewables
The CAISO Board of Governors approved proposed Tariff revisions that will require new renewable resources be capable of providing grid-stability services as a condition for interconnecting with the ISO’s system.
EIM Governing Body Convenes First Meeting, Selects Leadership
The newly established Western Energy Imbalance Market (EIM) governing body kicked off its first meeting last week by electing its leadership.
SoCal Gas Restrictions Unlikely to Impede Winter Grid Operations
Winter grid operations in Southern California are unlikely to be compromised by natural gas pipeline restrictions due to the shutdown of Aliso Canyon.
CAISO Proposes Broadening LSE Definition
CAISO is proposing to amend its Tariff to expand the definition of a “load-serving entity” to include any organization granted authority to serve its own electricity needs.
UPDATED: California Legislature Approves Bill to Sharply Reduce GHG Emissions
California lawmakers last week passed SB 32, a bill to reduce the state’s greenhouse gas (GHG) emissions to 40% below 1990 levels by 2030.

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