Free tool
Diesel generator vs solar cost calculator
Compare five-year running cost of your generator against an equivalent solar system.
Generator cost per year
AFN 384,300
Generator cost per year
AFN 384,300
4,380 litres of diesel burnt every year
- Fuel used per hour
- 1.5 litres
- Fuel cost per year
- AFN 372,300
- Five-year generator cost
- AFN 1,921,500
- Energy produced per year
- 11,680 kWh
- Equivalent solar system
- 8 kW (≈ AFN 336,000 installed)
- Five-year saving with solar
- AFN 1,585,500
Diesel consumption estimated at 0.3 litres per kVA per hour at typical load. Solar cost is a Ghazni market average including hybrid inverter and lithium storage.
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 →Solar Payback & ROI Calculator
See how many years your solar system takes to pay for itself and what it earns over 25 years.
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.