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.
Microsoft
The California Public Utility Commission approved construction of a set of transmission infrastructure projects to support a 90-MW data center owned by Microsoft, but questions remain about whether the upgrades will increase or decrease ratepayer costs.
Washington Dept. of Ecology
Washington’s attorney general and a coalition of environmental groups have mounted separate challenges to DOE's December decision to order TransAlta to continue operating the state’s last coal-fired plant for three months beyond its scheduled retirement.
Idaho Power
FERC staff recommended the commission relicense three Idaho Power-owned dams that have been operating under annual licenses since 2005, finding the company’s proposed measures adequately mitigate the environmental impact of the dams.
© RTO Insider
The Bonneville Power Administration is starting a new pilot program to decrease balancing reserve capacity requirements by connecting new generation facilities to the grid.
© RTO Insider LLC
Some of the Bonneville Power Administration’s proposals aimed at resuming transmission planning processes risk pushing study timelines to the point where the agency’s customers could run afoul of clean energy targets in Washington and Oregon, stakeholders say.
Black Hills Energy
Black Hills Energy completed construction on a 260-mile, $350 million transmission expansion project that will interconnect electric systems in Wyoming and South Dakota, while expanding the footprint of CAISO’s Western Energy Imbalance Market.
Balise42, CC BY-SA 4.0, via Wikimedia Commons
CAISO has proposed new interconnection criteria to flush out stale projects from a generator interconnection queue that has reached record volumes in recent years.
CEC
California’s electricity consumption is projected to increase dramatically over the coming decades due in large part to planned artificial intelligence data centers, although questions remain about how many of those data centers actually will be built.
© RTO Insider LLC
The Extended Day-Ahead Market took center stage at CAISO in 2025 as the ISO tabled other long-term initiatives to ensure the market’s timely launch in May 2026, with PacifiCorp as its first participant.
© RTO Insider
As NV Energy prepares to file its next integrated resource plan ahead of schedule in April, the company says it will take longer than previously planned to reduce its reliance on short-term market purchases.
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