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.
Western Area Power Administration
WAPA Tariff Falls Short of Reciprocity Status, FERC Finds
The Western Area Power Administration’s non-jurisdictional Open Access Transmission Tariff does not meet the standard of an “acceptable reciprocity tariff,” despite recent revisions the federal power agency incorporated into the tariff, FERC ruled.
UniSource Energy
Critics Call out Ariz. Commission for ‘Troubling’ Precedent
Arizona regulators are under fire for decisions on the expansion of a UNS gas-fired plant and third-party IRP audits.
CAISO
CAISO Board Approves Interconnection Enhancements Proposal
The CAISO board unanimously approved the ISO’s Interconnection Process Enhancements proposal, the product of more than a year of stakeholder engagement and troubleshooting.
Idaho Power
FERC Approves EDAM Tx Revenue Recovery Plan
FERC approved CAISO tariff revisions that will allow transmission owners to recover transmission revenue shortfalls attributed to transitioning their assets into the Extended Day-Ahead Market.
TerraPower
Bill Gates’ TerraPower Breaks Ground on Advanced Nuclear Plant
TerraPower broke ground on its Natrium reactor demonstration project in Wyoming, making it the first advanced reactor to enter construction.
NV Energy
NV Energy IRP Describes $1.76B Cost Jump for Greenlink Projects

Rising costs of materials and labor and an increased use of H-frame structures as an environmental mitigation have contributed to a $1.755 billion increase in the projected cost of NV Energy’s Greenlink transmission projects.

Western Power Pool
FERC Allows Berkshire Utilities to Earn Market-based Rates in WRAP
FERC approved tariff revisions by Berkshire Hathaway Energy subsidiaries PacifiCorp, Nevada Power and Sierra Pacific Power that will enable the utilities to earn market-based rates when participating in the WRAP.
WECC
WECC Flags Hydro in BC, SW Heat as Potential Summer Concerns
Extreme heat in the Desert Southwest and low hydro in the Northwest could pose reliability problems for the Western Interconnection this summer, although the region doesn’t face an alarming risk for grid emergencies, WECC officials said.
West-Wide Governance Pathways Initiative
Pathways Backers Advance WEIM/EDAM Governance Proposal
Backers of the West-Wide Governance Pathways Initiative will move quickly on a proposal to alter the governance of CAISO’s Western EIM and EDAM after voting to approve the plan.
Business Wire
NV Energy Confirms Intent to Join CAISO’s EDAM

NV Energy intends to join CAISO’s Extended Day-Ahead Market, an official with the utility said, notching a major win for the ISO in its competition with SPP’s Markets+ day-ahead offering in the West.


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