CAISO/WEIM

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 Imperial Irrigation District
Imperial Irrigation District Inks Agreement to Join CAISO Markets
CAISO said the Imperial Irrigation District has signed implementation agreements and will begin participating in the WEIM and EDAM in 2028.
Shutterstock
California’s ‘Pathways’ Bill Heading to Senate Floor

A California bill to implement the West Wide Governance Pathways Initiative’s Step 2 proposal is headed to the floor of the state Senate after being approved by the body’s Appropriations Committee.

CAISO
CAISO Approves $4.8B Transmission Plan to Support 76 GW of New Capacity
CAISO's Board of Governors approved the ISO's 2024/25 transmission plan to build out 31 new projects in the region over the next eight to 10 years.
Energy Northwest
BPA Approves $700M Plan to Boost Columbia Generating Station Output
BPA approved a $700 million plan to increase the output of the Pacific Northwest’s only commercial nuclear plant by 162 MW by 2031.
CAISO
CAISO Postpones EDAM Congestion Revenue Decision
CAISO delayed its final decision on how to allocate congestion revenues in its Extended Day-Ahead Market after receiving comments from stakeholders asking for more analysis.
© RTO Insider
CPUC Proposal Seeks to Blend RA, Clean Energy Procurement

The California Public Utilities Commission has proposed a new framework that would take a “more programmatic approach” to load-serving entities’ resource procurement requirements compared with the agency’s recent practice of issuing procurement orders as needed.

Shutterstock
Turlock Irrigation District to Join EDAM in 2027

California-based Turlock Irrigation District has agreed to join CAISO’s Extended Day-Ahead Market in 2027.

CAISO
CAISO Chooses Viridon to Develop Humboldt OSW Transmission Projects
CAISO selected Viridon, a power infrastructure development firm, to finance, build and operate new transmission lines and infrastructure in Humboldt County for planned offshore wind development.
© RTO Insider LLC
CAISO, PacifiCorp, PSCo All Close on Order 2023 Compliance

FERC partially approved three entities' Order 2023 compliance filings, directing them to address mostly minor — but a few substantive — issues in their submissions.

Bonneville Power Administration
BPA Exempted from Federal Staffing Cuts, Hairston Says
BPA will not see further staffing cuts, CEO John Hairston said during the agency’s quarterly business review, adding that he hopes to strengthen the workforce when the government lifts federal hiring freezes.

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