CAISO/WEIM
CAISO Board of GovernorsCalifornia Agencies & LegislatureCalifornia Air Resources Board (CARB)California Energy Commission (CEC)California LegislatureCalifornia Public Utilities Commission (CPUC)EDAMOther CAISO CommitteesWestern Energy Imbalance Market (WEIM)WEIM Governing Body
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.
The CAISO Board of Governors approved Tariff measures that will enable the ISO to procure additional black start resources in the San Francisco Bay Area.
CAISO is developing a plan for an Aug. 21 solar eclipse that will sharply reduce the state's solar power for three hours on a Monday morning in summer.
Californians who receive electricity from a community choice aggregator could face higher costs under a plan proposed by three investor-owned utilities.
Salt River Project signed an agreement with CAISO that puts the utility on track to join with the Western Energy Imbalance Market (EIM) in April 2020.
CAISO is considering approval of two low-cost transmission upgrade projects using an accelerated procedure that bypasses the usual stakeholder process.
CAISO is curtailing an increasing volume of renewable generation this spring as the ISO sees its “duck curve” already dipping to levels forecast in 2021.
Financial traders made clear that they won’t give up the CAISO congestion revenue rights auctions without a fight at a meeting on the auctions’ shortfalls.
EIM Governing Body members approved a measure that would give them increased power to make changes to the market’s governing charter.
Customers in LA County will have the option to purchase power from a new publicly run supplier that will obtain more of its energy from renewable resources.
Arizona Public Service expects to meet its future energy needs through increased use of natural gas and solar, while reducing coal reliance.
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