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What is Dominion's assumption for EE/DSM/DR levels? Specifically, is the Company assuming historical performance/savings, increased savings, or decreased savings over time? Regarding DR specifically, is the Company assuming that new large loads have interruptible service or other load-modifying capabilities to shift or reduce usage at peak?
As stated in the 2025 IRP Update, DSM programs, including energy efficiency (“EE”) and demand response programs, are expected to save energy and reduce capacity needs. Annually, the Company prepares a DSM forecast that reduces overall projected demand and energy in the DOM LSE. The incremental SCC-approved DSM program participation is subsequently subtracted from the Company’s overall load forecast to reflect the lower energy and demand. The EE adjustment is consistent with SCC-directed EE savings targets approved in Case No. PUR-2023-00227 (i.e., 3%, 4%, and 5% of 2019 jurisdictional sales for 2026, 2027, and 2028, respectively), and continued increases in energy savings for 2029-2045.
SB 371 (Chapter 378) requires the Company (and APCo) to file petitions for approval of a voluntary demand flexibility program that applies to high energy demand customers by January 15, 2027. The Commission must issue a final order on the petition by November 30, 2027.