ambient-adjusted ratings (AARs)
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The commission received dozens of comments on its advanced notice of proposed rulemaking that would require broad use of dynamic line ratings across the U.S. transmission grid.
NYPA
NYISO requested a three-year extension to comply with FERC Order 881, saying it needs more time to implement software and hardware updates needed to support ambient-adjusted ratings on transmission lines.
NYSERDA
NYISO stakeholders gave final approval to rules for "internal controllable lines" and revisions to day-ahead market congestion settlement procedures.
NYISO
NYISO members approved new rules for ambient line ratings and HVDC lines.
PPL
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 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
FERC issued orders directing transmission providers to clarify their timelines for calculating and submitting ambient-adjusted line ratings under Order 881.
NYPA
FERC approved the compliance filings of six transmission providers, including those of NYISO and CAISO, with Order 88.
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MISO, its Monitor and members debated the best course to implementing ambient adjusted line ratings during a Sept. 15 Advisory Committee discussion.
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FERC Commissioner Mark Christie said the agency's transmission NOPR gives the states plenty of flexibility to plan their public policy-focused projects.
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