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July 19, 2025

Potomac Economics

Potomac Economics
NEPOOL PC Briefs: June 24-26, 2025

ISO-NE and stakeholders discussed market performance, capacity auction reforms, the RTO’s 2026 budget and asset condition spending at the summer meeting of the NEPOOL Participants Committee.

Potomac Economics
ERCOT ESRs, Solar Production Lessen AS Costs

Energy storage resources and solar capacity helped reduce ancillary services costs and tight system conditions in the ERCOT market during 2024, according to a recent market report.

© RTO Insider 
NYISO Monitor Proposes Changing Congestion Rent Assignments

The NYISO Market Monitoring Unit is proposing to revise the ISO’s net congestion rent assignment process by allocating residuals to transmission owners on an individual facility basis.

Z22, CC-BY-SA 4.0, via Wikimedia Commons
NYISO Monitor Analyzing Alternative Capacity Market Designs
The NYISO Market Monitoring Unit told stakeholders it is independently analyzing the capacity market in parallel with the ISO’s ongoing Capacity Market Structure Review project.
Potomac Economics
NYISO’s Firm Fuel Proposal Criticized by Market Monitor
NYISO's market monitor says the firm fuel capacity accreditation proposal would incentivize generators to rely on inferior types of firm fuel service that could undermine the winter reliability benefits of firming up.
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NYISO Business Issues Committee OKs Firm Fuel Accreditation Concept
The NYISO Business Issues Committee approved, in concept, implementation of the ISO’s new firm fuel election process and requirements as part of its changes to capacity accreditation.
NYISO
NYISO Energy Costs up in Q3 2024
The Market Monitoring Unit said that even though all-in prices were slightly down, NYISO energy costs generally were up by 4 to 26% in most areas.
NYISO
NYISO Monitor Highlights Gap Between Planning, Market Requirements
NYISO's transmission planning requirements result in a need for more capacity than is required in the ISO’s market rules, according to Potomac Economics, the Market Monitoring Unit.
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NYISO Working Group Meeting Briefs: Oct. 1-2, 2024
NYISO proposed to increase the Rate Schedule 1 carryover to $5 million, while the Installed Capacity Working Group discussed different ways to incentivize transmission security via the markets.
© RTO Insider LLC
NYISO ICAP Working Group Briefs: Sept. 24, 2024
NYISO’s Market Monitoring Unit, Potomac Economics, presented recommendations for addressing what it calls inefficient market outcomes caused by setting locational capacity requirements based on the transmission security limit.

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