Electric utilities; regional energy market.

SB 458 permits Appalachian Power and Dominion Energy Virginia to join a regional energy market, which coordinates electricity generation and distribution across multiple states. This bill directly affects these two major Virginia utility companies by allowing them to participate in a shared grid system for buying and selling power. The key provision is granting formal permission for their participation, enabling them to access broader energy markets and potentially reduce costs. This is a procedural change focused on utility company operations, not a new policy affecting consumers or the environment.