Consistently cold weather drove record-high December energy market costs for ISO-NE and caused the region to rely heavily on stored oil and LNG injections.

ISO-NE continued work on the second phase of its Capacity Auction Reform project, discussing modeling of the region’s gas constraints, seasonal auction design and its approach to evaluating the impacts of the auction changes.

ISO-NE outlined its planned approach for accounting for resources’ gas supply limitations in its new capacity accreditation framework at a NEPOOL Markets Committee meeting.

NEPOOL technical committees voted in favor of ISO-NE’s proposal to adopt a prompt capacity auction and update the RTO’s resource retirement process.

ISO-NE’s probabilistic modeling indicates there is minimal risk of shortfall in the upcoming winter, COO Vamsi Chadalavada told the NEPOOL Participants Committee.

ISO-NE is proposing tariff changes intended to update how the RTO assigns capacity rights to resources not subject to its interconnection processes.

ISO-NE’s first interconnection cluster study held under new Order 2023 rules is made up mostly of large battery resources and contains only five wind and solar projects.

ISO-NE presented a high-level overview of how it plans to account for resource deliverability in its updated capacity accreditation framework.