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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

• 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.
• When will IRP modeling inputs be finalized, and when will stakeholders have access to those inputs or supporting data?