PGE Water Heater ET Final Report - FINAL.pdf - Emerging ...

PG&E’s Emerging Technologies Program ET12PGE3191
RESULTS AND ANALYSIS
ENERGY SAVINGS POTENTIAL
There is still a significant opportunity to save energy with efficient water heaters as aging
water heaters must be replaced. While almost 30 percent of all models meet the ENERGY
STAR specification, market penetration for these highly efficient models is less than 6
percent nationwide 35 and less than 1 percent in California.
The CPUC periodically commissions an energy efficiency potential study to assist IOUs in
setting program goals. A study published in 2012 provides an estimate of the maximum
achievable market potential for water heaters. The “maximum achievable” or incremental
market potential is defined as the “amount of additional new energy savings forecasted to
be delivered by IOU programs each year based on past program and market evaluations
and the most recent planning assumptions and forecasts.” 36
35 ENERGY STAR Unit Shipment and Market Penetration Report Calendar Year 2011
Summary, p. 7.
36 Navigant Consulting, “Analysis to Update Energy Efficiency Potential, Goals, and Targets
for 2013 and Beyond, Track 1 Statewide Investor Owned Utility Energy Efficiency Potential
Study,” prepared for California Public Utilities Commission, May 8, 2012, p. 4.
38