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March 21, 2026

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.
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CPUC OKs Data Center Tx Upgrades Using Distribution Refund Approach
In approving construction of new transmission facilities for a 49-MW data center in Sunnyvale, the California Public Utilities Commission relied on a process typically used for distribution projects.
Portland General Electric
ROWE to Address Governance of New Western RA Program by Fall
One of the first items the yet-to-be-seated board of the Regional Organization for Western Energy could decide on is whether to administer a resource adequacy program, as backers seek to have a proposal in place later in 2026.
© RTO Insider 
FERC Issues Order 917 Requiring Changes to Electric Quarterly Reports
FERC approved changes to electronic quarterly reports, which are required of market participants and help track rates and charges of the firms it regulates.
Western Area Power Administration
WestTEC Report Fuels Calls for Regional Transmission Task Force
The Western Transmission Expansion Coalition’s 10-year outlook has spurred talks about increased coordination between jurisdictions to upgrade or build 12,600 miles of transmission in the West and fueled calls for states to create a task force to streamline permitting and other issues.
Shutterstock
Wash. Lawmakers Approve Bill to Create Transmission Authority
The Washington Senate passed a bill to establish a transmission authority intended to help the state improve system capacity and meet growing demand by reducing the timeline to complete new transmission projects.
LADWP
Alternative Western RA Program Starts to Take Shape
Participants in CAISO’s Extended Day-Ahead Market likely would remain subject to the market’s daily resource sufficiency evaluation even if they joined a new resource adequacy program that’s being crafted.
CAISO
CAISO Looks to Improve Data Quality from Solar, Wind, Battery Resources
CAISO is proposing new methods to address “poor quality data” from some variable energy resources in the region in order to improve grid forecasting, the ISO said in a straw proposal.
APS
APS to Seek Palo Verde Extension through 2067
Arizona Public Service notified the Nuclear Regulatory Commission it plans to seek operating license renewals for all three units at Palo Verde Generating Station, potentially extending operations through the mid-2060s.
CEC
EV Capacity More Than Battery Storage in California, CEC Finds
California’s historic battery storage boom over the past five years has not kept up with EV capacity growth in the state — and now officials want to send idle electrons back to buildings, homes and the grid through new bidirectional chargers.
© RTO Insider 
EDAM Utilities Moving to Develop RA Program
The push to develop a resource adequacy program serving non-CAISO members of the ISO’s Extended Day-Ahead Market appears to be gathering momentum, with backers saying they aim to produce a draft design for the program in April.

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