Solar Water Heating - Heschong Mahone Group

Measure Information Template Page 18
Table 9 Proposed Standards Case Results: Commercial Solar w/ Electric Gas Storage back up
Incremental
Measure Cost
Climate Zone
Annual Energy
Savings (kWh)
30 Year TDV
Energy Cost
Savings ($)
(installation and
PV maintenance
and replacement)
Life Cycle
Cost
Savings ($) Solar Fraction
1 TBD TBD TBD TBD TBD
2 TBD TBD TBD TBD TBD
3 TBD TBD TBD TBD TBD
4 TBD TBD TBD TBD TBD
5 TBD TBD TBD TBD TBD
6 TBD TBD TBD TBD TBD
7 TBD TBD TBD TBD TBD
8 TBD TBD TBD TBD TBD
9 TBD TBD TBD TBD TBD
10 TBD TBD TBD TBD TBD
11 TBD TBD TBD TBD TBD
12 TBD TBD TBD TBD TBD
13 TBD TBD TBD TBD TBD
14 TBD TBD TBD TBD TBD
15 TBD TBD TBD TBD TBD
16 TBD TBD TBD TBD TBD
Third, installing and utilizing solar water heating with a natural gas backup water heater in restaurants
12,500 sq. ft. or larger is cost-effective over the base case, a natural gas storage water heater. Table
10 summarizes the energy, energy cost savings and the life-cycle cost savings for the Standards Case
for restaurants with natural gas water heating, as well as the corresponding solar fraction achieved by
the solar system using Equation 10.
Table 10 Proposed Standards Case Results: Commercial Solar w/ Electric Gas Storage back up
Incremental
Measure Cost
(installation
and PV
Climate Zone
Annual Energy
Savings (Therms)
15 Year TDV
Energy Cost
Savings ($)
maintenance
and
replacement)
Life Cycle Cost
Savings ($)
Solar
Fraction
1 2,847 $41,038 $26,199 $887 0.34
2 3,001 $43,105 $26,199 $4,689 0.37
3 2,949 $42,407 $26,199 $3,909 0.36
4 2,994 $43,030 $26,199 $5,140 0.38
5 3,027 $43,756 $26,199 $5,867 0.38
6 2,891 $42,081 $26,199 $4,590 0.37
7 2,884 $42,353 $26,199 $5,266 0.38
8 2,885 $41,935 $26,199 $4,907 0.38
9 2,890 $41,986 $26,199 $5,270 0.39
10 2,912 $42,348 $26,199 $5,664 0.39
11 2,975 $42,688 $26,199 $5,230 0.38
12 2,957 $42,364 $26,199 $4,383 0.37
2013 California Building Energy Efficiency Standards March 2011