Free tool
Solar payback and ROI calculator for Ghazni
See how many years your solar system takes to pay for itself and what it earns over 25 years.
Payback period
2.7 years
Payback period
2.7 years
AFN 44,400 saved every year after maintenance
- Monthly saving
- AFN 3,700
- Yearly saving
- AFN 44,400
- 25-year net profit
- AFN 990,000
- Return on investment (25 yr)
- 825%
- Average yearly return
- 33%
- Break-even month
- Month 33
Assumes stable fuel and tariff prices and one battery replacement budgeted inside maintenance. Real payback in Ghazni is usually faster because diesel prices rise.
Questions about this calculator
More free solar tools
Solar System Size Calculator
Enter your monthly usage and get the full system design — kW, panels, inverter and battery.
Open →Solar Panel Calculator
Panel count and roof area for any monthly electricity usage.
Open →Inverter Size Calculator
Correct hybrid inverter rating with surge headroom for your load.
Open →Battery Bank Calculator
Lithium vs lead-acid capacity sized for your backup hours.
Open →Cable Size & Voltage Drop
DC wire thickness, voltage drop percentage and breaker rating.
Open →Tilt Angle & Direction
Best fixed tilt and orientation for your latitude.
Open →Generator vs Solar Cost Calculator
Compare five-year running cost of your generator against an equivalent solar system.
Open →Appliance Load Calculator
Add up your appliances to get daily kWh, peak watts and the inverter you need.
Open →Solar Water Pump Calculator
Size a solar pump and array from well depth, daily water need and sun hours.
Open →Roof Area to Solar Calculator
Turn roof length and width into panel count, kW capacity and yearly production.
Open →String Sizing Calculator
Temperature-corrected panels per string for safe inverter voltage limits.
Open →Ready to switch off the generator for good?
Book a free site survey in Ghazni. We measure your load, design the right system and give you a fixed written price.