This calculator provides consumer information on the energy, cost and environmental savings potential of residential solar hot water systems in Florida. The calculations and assumptions were modeled on the solar system calculator tool (SHW-calculator_simple.xls, 204k) available for Microsoft Excel and developed by FSEC's Deputy Director, Philip Fairey.
To use this calculator, answer the two questions under the heading "Basics Solar System Information" using the pull-down menus provided. For the input "Florida Climate Zone," if your home is north of Volusia County, select "North" and if your home is south of St. Lucie County, select "South." Otherwise, select "Central."
The calculator depends on a number of pre-selected assumptions. To view and change these assumptions, select the checkbox below and the additional input fields will appear. If you choose to not change these assumptions, simple uncheck the box below anytime.
|Solar System Energy Factor:||Standard System Type:|
|Hot Water Use Intensity:||Discount Rate:||% per annum|
|Solar System Cost:||General Inflation Rate:||% per annum|
|IRS Credit (30% of Cost):||Retail Electricity Price:||$/kWh|
|FL State Rebate:||Retail Natural Gas Price:||$/therm|
|FL Utility Rebate Amount:||Fuel Escalation Rate:||% per annum|
|Annual Energy Cost Savings:||$/year||Annual CO2 Savings:||lb/year|
|Annual Solar Energy Savings:||kWh/year||Annual Solar Fraction:||%|
|Internal Rate of Return:||per annum||Simple Payback Period:||years|
|Cost of Solar Energy:||cents/kWh||Net Present Value:||present $'s|