Solar ROI Calc

Solar ROI Calculator helps solar installers and homeowners evaluate the financial return of a residential or commercial PV system.

# Features
- System cost and size in kW
- Annual production estimate (kWh)
- Electricity rate ($/kWh) with annual escalation rate
- Federal Investment Tax Credit (ITC) and state incentives
- Annual maintenance cost
- Financing options: cash purchase or loan with custom term and interest rate
- Panel degradation rate per year
- Analysis period in years (e.g. 25-year warranty)
- Calculated outputs: net cost after incentives, year-1 savings, simple payback, total net savings, ROI %, LCOE, monthly loan payment, break-even year

# For
Solar sales reps, EPC contractors, homeowners, financial analysts, energy consultants.

# Optional Pro Upgrade - $2.99 one-time in-app purchase
Pro unlocks history, dark mode, PDF export with full financial breakdown, and removes ads. One-time purchase.

OPTIONAL PRO UPGRADE - $2.99 ONE-TIME IN-APP PURCHASE
The following features require a separate one-time in-app purchase. They are not required to use the calculator:
- Unlimited saved calculation history
- PDF export of results
- Dark theme
- Ad-free experience