CAISO Department of Market Monitoring (DMM)
CAISO has launched an initiative to improve its congestion revenue rights market by addressing issues such as revenue inadequacy and auction efficiency.
CAISO’s Board of Governors and the Western Energy Markets Governing Body voted unanimously to pass a proposal that will modify the calculation used to determine bid cost recovery payments for storage resources.
First-quarter electricity prices in CAISO markets were down sharply from the same period in 2023, despite sharp spikes during the January cold snap in the Pacific Northwest, the ISO’s Department of Market Monitoring said.
CAISO is reconsidering its proposal to address unwarranted bid cost recovery payments for storage resources following internal analysis that suggested the proposed solution wouldn’t sufficiently address the problem.
Protecting the public interest while implementing the Extended Day-Ahead Market and expanding the Western footprint was central to the discussion in a West-Wide Governance Pathways Initiative workshop.
CAISO’s own systems may have contributed to a set of “operational surprises” that forced it to declare a series of energy emergency alerts in July 2023, a member of the ISO’s Market Surveillance Committee said.
FERC accepted CAISO’s proposal to allow for storage resources to bid above the ISO’s $1,000/MWh soft offer cap in the real-time market to account for their intraday opportunity costs.
Batteries may be receiving excessive or inefficient bid cost recovery payments in CAISO, an issue that could be exacerbated by the ISO’s recent move to increase its soft offer cap to allow for higher bids by storage resources.
Congestion revenue rights auctions averaged $62 million in losses between 2019 and 2023, down nearly $50 million since changes were implemented in 2019 but “still very high,” said CAISO’s Department of Market Monitoring.
CAISO's Department of Market Monitoring found that limits on WEIM imports last year led to increased transmission congestion in the ISO's markets.
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