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Will stakeholders have access to the IRP modeling tools and inputs?

House Bill 429 / Senate Bill 249 addresses stakeholder access to modeling tools and inputs. As stated previously, the Company is actively considering how to reflect these requirements in future IRP processes, assumptions, modeling, analysis, and stakeholder engagement activities, but does not plan to provide PLEXOS licenses for the 2026 IRP cycle. See https://devirp.dominionenergy.com/stakeholder-questions-and-answers/will-dominion-provide-plexos-licenses-free-or-at-a-discount-to-intervenors-to-allow-them-to-work-directly-with-irp-models.

Other Stakeholder Questions and Answers

• How will Dominion’s next IRP satisfy Va. Code Ann. § 56-599(B)(10)’s requirement to provide “a comprehensive assessment of the potential application of grid-enhancing technologies and advanced conductors,” including whether Dominion will evaluate opportunities for those technologies to defer, reduce, or eliminate the need for new grid infrastructure and, if they are not included in the IRP, provide the required detailed explanation? Will the assessment compare GETs and advanced conductors against conventional transmission solutions using consistent metrics? Will Dominion identify the specific transmission needs, constraints, or candidate facilities where it evaluated non-conventional solutions and include the results with production cost and power flow modeling in the IRP?
• Does the IRP modeling consider the Social Cost of Carbon?