Phase I and Phase II Utilities; electric grid utilization metrics. Requires Dominion Energy and Appalachian Power to petition the State Corporation Commission for approval of grid utilization metrics by October 15, 2026, which petition may be consolidated with the integrated resource plan filing for Dominion Energy in 2026. Under the bill, the petition shall include certain assessments comparing current electric grid system performance with optimal utilization of existing electric grid assets. The bill also requires the Commission to include in an existing annual report its findings on each applicable utility's assessment of relevant grid utilization metrics, which shall include an analysis of the potential for each applicable utility to increase electric grid utilization through the deployment of non-wires alternatives.