Virginia regulators on rejected large portions of Dominion Energy's grid transformation proposal, including smart meter deployment and other modernization efforts.The 10-year proposal would have cost approximately $6 billion, with the first three-year phase pegged at $1.5 billion. Regulators said Dominion's plan had not been shown to be cost effective, cutting $1.34 billion from the first phase and leaving just $154.5 million for security-related measures.While the State Corporation Commission (SCC) did approve Dominion's physical and cyber security plans, the denials sent the utility back to the drawing board in terms of developing a smarter and more efficient grid. The utility said it will take the commission's comments into account when it files its next proposal.