Quick Solar Water Heating Estimate
This calculator only provides a basic estimate to help San Francisco property owners get a first look at how solar water heating can benefit them. We recommend contacting
solar installers
to get detailed proposals for a solar water system tailored to meet your needs. More information about solar water heating systems is available on the
SFEnvironment website
.
SWH System Information
Property Type:
Single-Family Residential
Apartments/Condos
Hotel/Motel
Retirement/Nursing Home
Student Housing
Office Building without showers
Meal Service Restaurant
Quick Service Restaurant
Elementary School
Junior/Senior High School
Laundromat
Other Commercial Facility
Other Non-Profit Facility
Number of Occupants for System Sizing:
2 occupants - 35 gallons/day
3 occupants - 45 gallons/day
4 occupants - 55 gallons/day
5 occupants - 65 gallons/day
6 occupants - 75 gallons/day
7 occupants - 85 gallons/day
8 occupants - 95 gallons/day
9 occupants - 105 gallons/day
10 occupants - 115 gallons/day
Expected Utility Rate Inflation:
0.0% per year
0.5% per year
1.0% per year
1.5% per year
2.0% per year
0.5% per year
3.0% per year
0.5% per year
4.0% per year
0.5% per year
5.0% per year
0.5% per year
6.0% per year
0.5% per year
7.0% per year
0.5% per year
8.0% per year
System Price:
(Leave blank to use default price)
$
Natural Gas Rate ($/therm):
(Leave blank to use default price)
$
SWH Finanical Information
Loan Amount:
0% of Net System Price
10% of Net System Price
20% of Net System Price
30% of Net System Price
40% of Net System Price
50% of Net System Price
60% of Net System Price
70% of Net System Price
80% of Net System Price
90% of Net System Price
100% of Net System Price
Loan Life:
5 years
10 years
15 years
20 years
Loan Rate:
1.00%
1.25%
1.50%
1.75%
2.00%
2.25%
2.50%
2.75%
3.00%
3.25%
3.50%
3.75%
4.00%
4.25%
4.50%
4.75%
5.00%
5.25%
5.50%
5.75%
6.00%
6.25%
6.50%
6.75%
7.00%
7.25%
7.50%
7.75%
8.00%
8.25%
8.50%
8.75%
9.00%
9.25%
9.50%
9.75%
10.00%
10.25%
10.50%
10.75%
11.00%
11.25%
11.50%
11.75%
12.00%
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Please input the system size in gallons per day.
