Arizona utility commissioners said they wanted to see more independent governance for CAISO before further committing to the WEIM.

Four Arizona entities have joined seven Pacific Northwest entities to support the next phase of SPP’s Markets+ development.

With three coal plants slated for closure within the next 10 years, Arizona regulators, utilities and communities are exploring ways to repurpose the facilities.

FERC ordered two more sellers to issue refunds for excess prices earned in the August 2020 Western heat wave event.

The Western EIM took on BPA and Tucson Electric Power as new participants, marking the market’s largest single expansion since its founding.

FERC approved a slate of penalties against an electric utility, an RTO and a government agency for violations of NERC reliability standards.

The Arizona legislature passed a bill that would close the door to electric retail competition, but lawmakers said the conversation on deregulation isn't over.

Arizona regulators have rejected Salt River Project’s proposed expansion of the Coolidge Generating Station, a gas-fired power plant in Pinal County.

A CAISO market report says high natural gas prices drove a 50% run-up in electricity costs in Q4 2021, hitting the Western Energy Imbalance Market as well.

FERC upheld its finding that CAISO’s temporary wheel-through restrictions do not violate open-access principles and approved a two-year extension of them.