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.
FERC Again Rejects CAISO ‘Market Values’ Plan
FERC again rejected CAISO’s proposal to change the way generators register their capabilities with the ISO, denying a plan that could allow participants to exercise market power.
State Regulators to Re-examine PNM’s EIM Membership
New Mexico’s PUC vacated an order that had paved the way for the PSC of New Mexico to join CAISO’s Western Energy Imbalance Market by the spring of 2021.
CAISO Seeks More Transfers with Pacific Northwest
CAISO is exploring ways to exchange more low-carbon electricity with the Pacific Northwest, while WestConnect looks to absorb exports from California during overgeneration.
Overheard at the NARUC Winter Policy Summit
Policymakers and industry officials gathered for NARUC Winter Policy Summit, where they discussed coal and nuclear power, among other topics.
Judge Sends Mixed Signals on PG&E Contract Dispute
The federal judge overseeing Pacific Gas and Electric’s bankruptcy case suggested he might prohibit the utility’s electricity suppliers from seeking FERC’s help with disputed contracts.
PG&E Lays out Billion-dollar Wildfire Plan
Pacific Gas and Electric proposed spending up to $2.3 billion on grid hardening, increased line inspections, and vegetation management to prevent wildfires.
FERC OKs Salt River Project Agreement to Join EIM
FERC approved an agreement between CAISO and the Salt River Project that establishes the rules governing the utility’s participation in the Western EIM.
FERC Lets New Mexico PURPA Ruling Stand
FERC declined to hear a complaint against the New Mexico Public Regulation Commission to clarify when the Public Utility Regulatory Policies Act kicks in.
CAISO Raises Stakes for Intertie Non-delivery
CAISO’s Board of Governors approved a proposal to ensure bidders from outside the ISO deliver electricity as promised or face stringent financial penalties.
Exelon: Need Pa. Action by May to Save TMI
Pennsylvania lawmakers must approve nuclear subsidies by May to prevent the retirement of Three Mile Island Unit 1, Exelon CEO Chris Crane said.

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