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December 29, 2025

California Independent System Operator (CAISO)

Mexico’s Grid Operator to Explore Participation in EIM
CENACE and CAISO announced an agreement to explore the benefits of having Baja California Norte join the Energy Imbalance Market (EIM).
Report: Calif. ‘Duck Curve’ Growing Faster than Expected
A new research report indicates that "The duck curve is driven by utility-scale solar in California, not distributed resources."
FERC to Consider Western Energy Crisis ‘Umbrella Pricing’ Theory
FERC last week agreed to consider whether reporting deficiencies concealed market manipulation that contributed to the Western Energy Crisis of 2000-2001.
CAISO Seeks Process to Keep EIM, Governing Body in the Policy Loop
CAISO is seeking ways to ensure that the EIM governing body and participants, havea say in ISO policies that affect the EIM.
QA: Western Resource Advocates Sees Benefits from Western RTO
Environmental group Western Resource Advocates was an early proponent of CAISO’s Energy Imbalance Market and is actively supporting the ISO’s effort to transform itself into an RTO serving the broader West.
Latest CAISO Proposal Fills out Western RTO Governance Plan
CAISO last week released the third draft of a proposal outlining the principles intended to underpin the governing framework for a Western RTO.
Smooth EIM Transition for Arizona Public Service, Puget Sound Energy
The entry of Arizona Public Service and Puget Sound Energy into the Western Energy Imbalance Market went off without a hitch, according to CAISO.
EBA Speakers Ponder a Western RTO
Western energy execs discussed the growth of the EIM, a Western RTO, “Caliphopia” and how the Western Interconnection is likely to change.
PGE
FERC Sets PGE Rate Increase Proposal for Talks
FERC accepted Pacific Gas & Electric’s (NYSE:PCG) filing for a proposed rate increase under the utility’s transmission owner tariff, but suspended implementation of the increase for five months.
CAISO Sees Steady 2017 Revenue Requirement Despite Spending Rise
CAISO expects to hold its 2017 revenue requirement to this year’s level despite a planned $4.3 million increase in spending driven by rising labor costs.

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