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How are VPPs treated in the capacity market?

As stated in the Q&A from Modeling Meeting 1 on April 29, 2026, the Company is working on a program to pilot Virtual Power Plants (VPPs) and may use pilot program data to determine its inclusion in future IRP modeling. Information about the pilot program is available here: https://www.dominionenergy.com/vpp.

Other Stakeholder Questions and Answers

• How is the solar ELCC calculated based on existing and/or planned storage?
• Please represent both NPV slides in the actual mathematical algorithm being employed, also show how DSM factors in.