Solar ROI Calc & Payback

Solar ROI Calculator: Payback, Savings & Lifetime Yield

# What it does
Calculates simple payback period, lifetime savings, and ROI for residential and commercial solar PV installations.

# Features
- Total installed cost input
- Federal & state incentives modeling
- Annual production (kWh) input
- Utility electricity rate ($/kWh)
- Annual rate inflation factor
- System lifetime (typically 25 years)
- Simple payback period (years)
- Lifetime savings & ROI percentage

# Made for
Solar sales reps, homeowners, financial analysts, system designers, energy consultants.

# Optional Pro Upgrade — $2.99 one-time
The following features require a separate one-time in-app purchase. They are not required to use the calculator:
- Calculation history (saved & searchable)
- PDF report export with NEC references
- Dark theme
- Ad-free experience