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January 11, 2025

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.
Vantage Data Centers
EVs, Data Centers to Fuel Load Growth, Forecasting Challenges

EVs and data centers are expected to be major contributors to load growth, but each has unique challenges when it comes to load forecasting, speakers said during a WECC webinar.

Arizona Public Service
APS IRP Envisions Increased Renewables, Natural Gas

Arizona Public Service has filed a 15-year resource plan that lays out a strategy for meeting increasing demand and replacing capacity lost from its coal plant exit.

© RTO Insider LLC
Stakeholders Call for Structural Changes to CAISO’s Resource Adequacy Program

CAISO and its stakeholders are still in the early stages of grappling with how to redesign the ISO’s resource adequacy program to account for rapidly changing conditions on the grid.

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FERC Approves CAISO Wheel-through Rule Changes

FERC approved a raft of CAISO tariff changes intended to ease temporary restrictions on wheeling power through the ISO’s grid under emergency conditions.

EIA
EIA: Renewable Curtailments Rising Steadily in CAISO

CAISO’s curtailment of solar and wind power is on the rise, and about three-quarters of curtailments so far this year have been from transmission congestion.

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Mixed Views on CAISO Interconnection Process Proposal

CAISO stakeholders have voiced various concerns about an ISO straw proposal to revamp its interconnection process, with some cautioning about an overly rapid timeline.

The Greater Southwestern Exploration Company
AES Fined $6M for CAISO Resource Adequacy Violations
FERC fined independent power producer AES $6 million for failing to fulfill RA obligations related to eight of the company’s 12 generating units operating in Southern California.
BPA
Study Shows Uneven Benefits for California, Rest of West in Single Market

The results from a WMEG study indicate that many entities outside California would see more benefits from a two-market outcome while the Golden State has the most to lose from such a split.

SunZia
FERC Approves Tariff for SunZia Transmission
FERC approved an open access transmission tariff for the SunZia HVDC line in the Southwest, which will govern how the merchant project can sell any additional capacity it has going forward.
Idaho Power
FERC OKs Transmission Swap Between Idaho Power, PacifiCorp

FERC approved a transmission asset swap between Idaho Power and PacificCorp as part of the companies’ plans to develop a 300-mile-long, 500-kV line.


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