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January 12, 2026

Potomac Economics

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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.
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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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MISO Monitor Spotlights Congestion Fixes, Market Mismatches in 2023
MISO’s Independent Market Monitor debuted six new market recommendations this year as part of his annual State of the Market report.
Potomac Economics
NYISO Monitor: NYC Capacity Costs Rose 221% in Q1
New York City saw a 221% increase in capacity costs in the first quarter due to the retirement of 600 MW in peaker plants and the increase of more than 300 MW in the local installed capacity requirement.

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