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Is Dominion planning on doing any load forecast sensitivities, including forecasts with lower levels of demand growth, to represent the uncertainty around data center/large load growth in the coming years and decades? If so, what is Dominion's preliminary approach for modeling load sensitivities for this IRP?

Please refer to the Q&A from IRP Conference 1 (https://devirp.dominionenergy.com/stakeholder-questions-and-answers/will-you-do-sensitivity-tests-for-variations-of-load-forecasts-including-the-data-center-load-forecast). Plan sensitivities, including for the load forecast, were discussed in Chapter 5.3 of the 2025 IRP Update.

We anticipate having similar sensitivities in the 2026 IRP Filing.

Other Stakeholder Questions and Answers

• Has the Company already, or is the Company planning to discuss, opportunities to add new energy generation through surplus interconnection during the 2026 IRP stakeholder engagement process?
• What is Dominion's assumption for EE/DSM/DR levels? Specifically, is the Company assuming historical performance/savings, increased savings, or decreased savings over time? Regarding DR specifically, is the Company assuming that new large loads have interruptible service or other load-modifying capabilities to shift or reduce usage at peak?