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Could you please walk through a basic explanation of NPV?

Information about Net Present Value (NPV) can be found in slides 17-18 of the presentation from IRP Conference 1, held May 8, 2026, available here: https://devirp.dominionenergy.com/img/feedback/media/May-8---Stakeholder-Conference-1.pdf. In addition, for a full explanation of these slides, please view the Recording from IRP Conference 1, beginning at time stamp 0:25:20.

Other Stakeholder Questions and Answers

• Are Dominion Energy’s battery storage assets made available to the capacity market?
• Are inputs to the commodity forecast and algorithm transparent, including underlying data inputs and not just high level assumptions?