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December 5, 2025

phasor measurement unit (PMU)

IESO
IESO to Expand Synchrophasor Data Requirements to Storage

IESO proposes to update its synchrophasor data requirements to include storage resources as part of its effort to expand the use of phasor measurement units in Ontario.

PJM MRC/MC Briefs: Sept. 17, 2020
PJM stakeholders endorsed expanding the use of synchrophasors and making them a requirement for certain projects under the RTEP.
PJM Operating Committee Briefs: Aug. 6, 2020
The PJM Operating Committee endorsed changes to Manual 1 to expand the use of synchrophasors and make them a requirement for certain projects under the RTEP.
PJM Stakeholders OK PMU Requirement
PJM stakeholders endorsed “quick-fix” manual revisions to expand the use of synchrophasors and make them a requirement for certain projects under the RTEP.
PMU Vote Delayed by PJM
PJM’s Planning Committee postponed a vote on “quick-fix” manual revisions to expand the use of PMUs and require them for certain projects under the RTEP.
PJM PC/TEAC Briefs: May 12, 2020
PJM incumbent TOs won a victory as the Planning Committee endorsed a new regional targeted market efficiency project process that would be excluded from competition.
PJM PC/TEAC Briefs: March 10, 2020
PJM plans to expand the use of synchrophasors and formalize their placements — currently voluntary — into the Regional Transmission Expansion Plan.
FERC Approves SPP’s PMU Installations
FERC accepted SPP’s proposed Tariff revision requiring the installation of phasor measurement units at new generator interconnections.
FERC Staff Explore Barriers to Grid-enhancing Tech
Representatives from utilities, RTOs and technology vendors gathered at FERC headquarters for a workshop to discuss the role of grid-enhancing technologies.
Oscillation Event Points to Need for Better Diagnostics
Grid operators and generators need more granular, real-time data to respond to grid oscillation events, engineers on a NERC panel said.

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