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In the 2026 IRP, will you be modeling data center "flexibility" in how/when data centers use electricity? How much can this flexibility lower the peak load from data centers and lower transmission and generation needs?

Please refer to the Q&A from Modeling Meeting 1 (https://devirp.dominionenergy.com/stakeholder-questions-and-answers/will-you-be-modeling-data-center-flexibility-in-howwhen-they-use-electricity). A decision on a voluntary demand flexibility program for data centers is not expected until November 30, 2027. SB 371 (Chapter 378) requires the Company (and APCo) to file petitions for approval of a voluntary demand flexibility program that applies to high energy demand customers by January 15, 2027. The Commission must issue a final order on the petition by November 30, 2027.

Other Stakeholder Questions and Answers

• How does Dominion define advanced power flow control (APFC) devices, and how do these relate to other technologies such as Flexible AC Transmission System (FACTS) devices or series compensators?
• What is the method used by Dominion to simulate clean energy generators/batteries across transmission and distribution networks? Is the method discrete, stochastic, or some other approach? Please explain mathematical and input details of this method.