Stakeholders Endorse Manual Revisions
VALLEY FORGE, Pa. — The Operating Committee endorsed a pair of revisions to Manual 1: Control Center & Data Exchange Requirements and Manual 37: Reliability Coordination.
The changes to Manual 1 would align with NERC standards IRO-010, TOP-003 and EOP-008 and include updating the Generation Scheduling Service table with generation periodic eDART and Cold Weather Checklist data requests.
The periodic review of Manual 37 led to recommendations to update references throughout the document and remove the 3 p.m. posting deadline for next day reliability analyses.
March Operating Metrics
PJM’s Marcus Smith presented the forecast error and operating metrics for March, which saw a 1.47% hourly forecast error and three days exceeding the 3% peak error benchmark.
Warmer-than-expected temperatures March 4 led to load coming in lower than expected, pushing the peak error to 3.05%, while the hourly rate was 1.63%. March 6 saw cooler temperatures corresponding to peak loads being 4.14% lower than forecast. A similar dynamic was seen March 15, when the peak was 5.01% lower than forecast.
Three shared reserve events, one high system voltage action, seven post-contingency local load relief warnings and six shortage cases were issued. Two of the shortage cases were on March 15 due to lines tripping. Four were on March 19 and were attributed to load increases and reduced reserves being available.
Update on Regulation Market Design
PJM’s Damon Fereshetian presented an update on the implementation of PJM’s regulation market redesign, the first phase of which is set to go live Oct. 1, 2025. The second phase is scheduled to roll out a year later. (See “PJM Presents Regulation Market Rework,” PJM MRC/MC Briefs: Dec. 20, 2023.)
Phase 1 includes consolidating the RegA and RegD signals into one bidirectional signal, shifting to 30-minute clearing from hourly, eliminating the accuracy and delay components of performance scoping to focus only on precision, and changes to opportunity costs and the regulation requirement. The RegD product provides fast response, while RegA is used for long deployments.
Training on the changes is set to begin in May. Sandbox testing software will launch either that month or in June. PJM targets endorsement of manual language codifying the changes in August, with education sessions Aug. 12 and Sept. 5.
