Phase I and Phase II Utilities; energy efficiency upgrades; low-income residents; report. Requires Dominion Energy Virginia and Appalachian Power to make best, reasonable efforts to provide by December 31, 2030, prescriptive efficiency measures, as defined in the bill, and related efficiency improvements to at least 30 percent of the qualifying households, as defined in the bill, identified by such utilities, provided that the State Corporation Commission determines that such upgrades are in the public interest. The bill requires such utilities to report to the Commission its activities, plans, and filings regarding the bill's provisions no later than January 1, 2027, annually thereafter, and in any recurring filing that the Commission deems appropriate.