How will the Company model the energy efficiency changes contemplated in the recently signed IRP bill (HB 429 / SB 249)?

Please see the previously posted answer in our Q&A page, link below: https://devirp.dominionenergy.com/stakeholder-questions-and-answers/how-do-you-plan-to-address-irp-related-legislation-recently-signed-by-the-governor-of-virginia-in-the-2026-irp-process

Other Stakeholder Questions and Answers

Regarding transmission constraints, does the IRP model include more than one zone and account for interzonal transfer limits?
The SCC's final order on the 2024 states: "In modeling Dominion’s next IRP, Dominion and Staff shall work together to develop a locational model in PLEXOS using no more than four (4) Virginia-specific regional nodes." Was that direction changed during the 2025 update process, or does Dominion plan to add some load nodes to the model?