Solar Calculator Pakistan
Enter your monthly units, city and panel size to see the solar system you need, how many panels, the roof space, an estimated cost and your payback period. The numbers use today’s average panel rate of Rs 41 per watt (checked 11 November 2026).
Solar Calculator Pakistan
Bill se units dekhein aur apne ghar ka solar size, cost aur payback janein.
System size–
Panels needed–
Roof space–
Monthly saving–
Estimated total cost–
Payback period–
Estimate only. Uses today's average panel rate and typical installation costs; hybrid batteries are extra. Get 2–3 dealer quotes before buying.
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How this calculator works
- Daily need: monthly units ÷ 30.
- System size: daily need ÷ (your city’s peak sun hours × 80% system efficiency), rounded up to the nearest 0.5kW.
- Panels: system size ÷ panel wattage, rounded up.
- Cost: panels at today’s per-watt rate, plus a typical per-kW cost for the inverter, structure, cabling and installation. Hybrid batteries are not included.
- Savings: self-used units save your full tariff, while exported units earn about Rs 11 under the 2026 net billing rules.
Where to find your monthly units
Look for “Units Consumed” on your electricity bill. Your bill also shows the last 12 months. For the best sizing, use the average of the summer months, when ACs push consumption up.
Tips for accurate results
- Use your real per-unit rate: divide the bill amount by units consumed for a rough figure.
- If you plan to add an AC soon, add 250–350 units a month per 1.5-ton inverter AC used in summer.
- Choose “Hybrid” if you face regular load shedding and want backup.
Next, compare today’s solar panel prices and inverter prices, and read how net billing affects your savings.