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20260806-item-05---dominion-july-loss-of-load-event---presentation.pdf

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Document date Aug 6, 2026

Retrieved 2026-08-06 12:06 UTC

Fingerprint c59cf8c7fad37fea7a9118b3da568259a0c92054c28543b4db9f0d920f1a2e0d

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230 kV Fault in Dominion Zone Triggered PJM's Largest Load Transfer, About 3,800 MW claim 1 p. 2

…www.pjm.com | Public Event Summary • On Wednesday, July 22, at 07:56 approximately 3,800 MW of load transferred to back-up power when a 230 kV transmission line fault occurred within the Dominion zone • This event was the largest load transfer PJM has experienced – Similar events within PJM occurred on…

230 kV Fault in Dominion Zone Triggered PJM's Largest Load Transfer, About 3,800 MW claim 2 p. 1

…July 22, 2026 Dominion Load Transfer Event Matthew Wharton, Manager, Reliability Engineering Operating Committee August 6, 2026 PJM © 2026 2 www.pjm.com | Public Event Summary…

230 kV Fault in Dominion Zone Triggered PJM's Largest Load Transfer, About 3,800 MW claim 6 p. 3

…• 07:56 Frequency reached 60.092 Hz • 08:06 Balancing Authority ACE Limit (BAAL) excursion recovered within 9 minutes – BAL-001-2 R2 requires recovery within 30 minutes PJM © 2026 4 www.pjm.com | Public RTO Load vs. ACE…

230 kV Fault in Dominion Zone Triggered PJM's Largest Load Transfer, About 3,800 MW claim 8 p. 17

…17 www.pjm.com | Public Next Steps • PJM and Dominion continue to jointly review the event and its system impacts. • PJM is evaluating potential enhancements to reliability requirements, including consideration of existing and future industry ride-through standards and practices. • Additional findings and lessons learned from…

230 kV Fault in Dominion Zone Triggered PJM's Largest Load Transfer, About 3,800 MW claim 9 p. 11

…of large loads into the BPS.” • NERC/SDT is on-track to file with FERC by December 31, 2026 – FERC Docket RD26-7-000 directing NERC to file by December 31, 2026 Requirements to address integration of Computational Loads onto the BPS Changes to NERC Glossary to align with Rules…

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