Solar Savings Calculator
Last reviewed:
Estimate how much you could save by going solar. Adjust the inputs below to see your personalized results.
Your Details
Your Estimated Savings
25-Year Savings
$11,250
Payback Period
~18 years
This model is an example, not a measured Florida average or a quote. Its assumptions do not establish your utility rate, power output or savings.
Calculation assumptions
The model assumes $0.13/kWh, 5.67 equivalent sun hours per day, a 0.8 output factor and $3,000 per kW. These inputs are kept as examples. They are not verified current rates or installer prices. System size is rounded up to a whole kW.
Annual usage = monthly bill ÷ assumed rate × 12. System size = annual usage ÷ (sun hours × 365 × 0.8). The savings example assumes 85% of the annual bill is avoided. Simple payback = equipment budget ÷ assumed annual savings; the 25-year total = annual savings × 25 − equipment budget.
No cash incentive is deducted. Tax exemptions are not a general percentage rebate on an installation. This model leaves out financing, upkeep and replacement costs. It also leaves out degradation, rate changes and your utility's export credits. The roof-condition selector does not change the calculation. Before relying on an estimate, get a roof assessment, current tariff and a bid with each cost listed.
Sources & References
- U.S. DOE: Homeowner’s Guide to Solar
Roof suitability, power output, storage and ownership only. Use the IRS sources for current tax rules. This guide has older tax information.
- CFPB: Issue Spotlight on Solar Financing
Loan markups, contract risks and savings assumptions. Past examples are not current loan offers or tax advice.
- Florida Statutes §193.624: renewable-energy property assessment
How qualifying home renewable-energy value is left out of the tax assessment.
- Florida DOR: Solar Energy Systems (TIP 19A01-09)
The sales/use-tax exemption for qualifying solar systems and parts.