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December 5, 2025

FERC Order 881

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FERC Accepts SPP Compliance Filing on Order 881
FERC found SPP mostly in compliance with the directives of Order 881.
NYSERDA
NYISO Management Committee Briefs: Nov. 29, 2023
NYISO stakeholders gave final approval to rules for "internal controllable lines" and revisions to day-ahead market congestion settlement procedures.
NYISO
NYISO Stakeholders Advance Rules on Ambient Ratings, Internal Controllable Lines
NYISO members approved new rules for ambient line ratings and HVDC lines.
PPL
Grid-enhancing Technologies Poised for Growth with Federal Funds
Grid-enhancing technologies have been piloted in many places, but with recent FERC orders and federal funding, they are poised to become much more common.
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SPP Board/Members Committee Briefs: July 24-25, 2023
SPP’s Board of Directors and its state regulators endorsed congestion-hedging improvements that have been years in the making, accepting staff’s recommendation to approve a package of eight proposals.
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FERC Calls for More Info on Order 881 Compliance Timelines
FERC partly approved Order 881 compliance filings from several transmission providers, asking for more information on timelines for calculating or submitting ambient-adjusted line ratings.
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SPP Markets and Operations Policy Committee Briefs: July 10-11, 2023

SPP stakeholders endorsed a tariff revision request that adds a winter resource adequacy requirement for load-responsible entities bound by the grid operator’s recent planning reserve margin increase.

MISO
Order 881 Timelines Need Explaining, FERC Says
FERC issued orders directing transmission providers to clarify their timelines for calculating and submitting ambient-adjusted line ratings under Order 881.
NYPA
FERC Approves Batch of Line Ratings Compliance Filings
FERC approved the compliance filings of six transmission providers, including those of NYISO and CAISO, with Order 88.
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Grid-Enhancing Technologies Can Speed Up Queues, Experts Say
GETs can reduce the congestion preventing interconnection of renewables more quickly than building more transmission while saving customers money, experts say.

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