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December 27, 2025

California Independent System Operator (CAISO)

Power Sellers Urge Action on CAISO Flex Capacity
CAISO stakeholders are urging it to develop a plan to procure the flexible capacity resources needed to manage the integration of renewable generation.
Grid Operators Manage Solar Eclipse
U.S. grid operators, the ISOs and RTOs across the country, were well prepared for the first continent-wide total solar eclipse in nearly a century.
California Awarding $45 Million for Microgrids
California is offering $45 million in grants for the development of microgrids to stimulate development of new distributed energy resources.
GridLiance Gets OK to Acquire Valley Electric Tx Assets
FERC approved GridLiance West’s acquisition of Valley Electric Association’s 230-kV transmission network in a deal valued at about $200 million.
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FERC Denies Extension of CAISO Intermittent Resource Program
FERC rejected a CAISO proposal to extend the life of a program designed to protect some renewable energy resources from being assessed uplift costs associated with their variable output.
Calpine Going Private in $5.6B Deal
Calpine announced it has agreed to be acquired by Energy Capital Partners and other investors for $5.6 billion in cash.
CAISO Monitor Says Bid Rule Changes Flawed
CAISO's Monitor submitted comments on the ISO’s straw proposal for its Commitment Cost and Default Energy Bid Enhancements (CCDEBE) initiative.
EIM Members Wary of Need for CAISO Wheeling Charge
The CAISO proposal to provide transmission revenue to balancing authority areas that wheel power received a wary response from EIM stakeholders.
CAISO Seeks Changes to Boost Retirement Program
CAISO unveiled its latest revisions to a program meant to compensate uneconomic generation units needed to maintain reliability.
CAISO Demand Response Problems Erode Participation
Frequent rule changes and an uncertain market structure are causing dissatisfaction among CAISO demand response providers and eroding participation.

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