Western Energy Imbalance Market (WEIM)
CAISO
CAISO's Western Energy Imbalance Market provided participants $374.25 million in benefits during the fourth quarter of 2024, down about 4% from the same period a year earlier, according to an ISO report.
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El Paso Electric says it will join SPP’s regional day-ahead Markets+ service offering in a “strategic move … tailored” to meet expected customer load growth and evolving needs.
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FERC approved CAISO’s tariff revisions related to real-time bid cost recovery rules for energy storage resources.
CAISO
Prices in CAISO’s WEIM fell sharply in the third quarter of 2024 compared with a year earlier as declining gas costs outweighed the impact of increased summer loads, the DMM found.
© RTO Insider LLC
Establishing a fast-start pricing mechanism in CAISO and the WEIM is complex and brings few benefits compared to other potential market enhancements, the ISO's Department of Market Monitoring said.
© RTO Insider LLC
CAISO’s launch of the Extended Day-Ahead Market will not spell the end of a Western real-time-only offering from the ISO, according to CEO Elliot Mainzer.
© RTO Insider LLC
The Balancing Authority of Northern California became the third entity to formally join CAISO’s Extended Day-Ahead Market, following PacifiCorp and Portland General Electric.
Markets+ Joint Authors using CAISO data
CAISO will be inherently compromised in its role as an operator of a deeper Western market because of its conflicting responsibilities as BA within that market, a group of entities that support SPP’s Markets+ argue in their latest “issue alert.”
NW Energy Coalition
CAISO’s Board of Governors and WEM Governing Body approved ISO tariff amendments needed to implement the West-Wide Governance Pathways Initiative’s “Step 1” proposal.
WAPA
The Western Area Power Administration said its Sierra Nevada region will pursue “final negotiations” to join CAISO’s Extended Day-Ahead Market, notching another — if expected — victory for the ISO in its competition with SPP’s Markets+.
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