What changes have been made since the 2023 IRP filing regarding intervenor concerns? What does Dominion Energy plan to include in the 2024 IRP based on last year’s IRP litigated proceeding?

At this time, Dominion Energy has not made final decisions on all the topics identified in the 2023 Integrated Resource Plan (IRP) proceeding.  Some things we are considering incorporating, in no particular order are listed below. If an item is not listed, that does not mean we have ruled it out.

• We continue to evaluate and refine our capacity factor assumptions for onshore wind by following the Commission Staff’s recommendation in the 2023 IRP to use more regional data. We are expecting the capacity factor will be lower this year.
• Per the recommendations of the Commission Staff and the Hearing Examiner during the 2023 IRP case, we will utilize the PJM Effective Load Carrying Capacity (ELCC) study, published on April 24, 2024, for use in the 2024 IRP modeling for all applicable resources in the IRP modeling.
• In addition to utilizing the PJM ELCC study, per the recommendations of intervenors and the Hearing Examiner in the 2023 IRP case, we have commissioned a third-party transmission study which will inform the energy import limits used in modeling the 2024 IRP.
• We are currently evaluating the recently finalized federal environmental regulations and will incorporate compliance with those regulations into our modeling. Challenges on the rules from states, industry coalitions and other entities have been filed. We are currently proposing to look at plans that include the environmental regulations and plans that do not. Three of these environmental regulations were just finalized in April. They are complex and we are still evaluating the impacts. We have also not modeled these regulations before, and it will take some time to understand how the model will react with incorporating these rules.
• Based on stakeholder feedback, we are looking into providing a non-normal weather analysis in this year’s IRP.
• Based on stakeholder feedback, we are evaluating energy efficiency targets beyond 2025.  The VCEA prescribes energy efficiency targets through 2025 and requires the VA State Corporation Commission to establish new targets for 2026 to 2028 but those have not yet been set by the Commission.

Other Stakeholder Questions and Answers

• How will SMRs impact the model, and what role can they play in meeting load demand? What role can SMRs play in the transition to clean energy? How do SMRs affect affordability? How do you balance all of the risks and requirements for SMRs?
• What must be considered in IRP modeling?