Free Solar Calculator
Solar System Size & Savings Calculator Pakistan
Find out the perfect solar system size for your home or business, estimated annual savings, and payback period — customized for your city and system type.
Enter Your Details
Current NEPRA export credit rate
Enter your monthly bill or units to see your solar estimate
How We Calculate Your Solar System
Estimate Units
Your bill ÷ Rs 55/unit = monthly units consumed
System Size
Monthly units ÷ 165 kWh/kW (5.5h sun × 30 days) = system size
Savings & Payback
Annual production × tariff rate + net metering credits = total benefit vs system cost
Solar System Sizes
3 kW Solar System
Price, specs & ROI for Pakistan
5 kW Solar System
Price, specs & ROI for Pakistan
10 kW Solar System
Price, specs & ROI for Pakistan
15 kW Solar System
Price, specs & ROI for Pakistan
20 kW Solar System
Price, specs & ROI for Pakistan
30 kW Solar System
Price, specs & ROI for Pakistan
50 kW Solar System
Price, specs & ROI for Pakistan
Frequently Asked Questions
How is the solar system size calculated?+
We estimate your monthly electricity units by dividing your bill by the average per-unit rate. Then divide units by monthly production per kW (based on your city's sun hours) to determine the required system size.
What is the difference between on-grid, hybrid, and off-grid solar?+
On-grid systems connect to the utility grid and export excess energy via net metering. Hybrid systems include battery storage plus grid connection for backup during outages. Off-grid systems are fully independent with battery storage — ideal for areas without reliable grid access.
What is the payback period for solar in Pakistan?+
For most residential systems in Pakistan, the payback period is typically 3-5 years depending on your electricity consumption, system size, and local tariff rates.
How does net metering affect my savings?+
With net metering, excess energy you export to the grid earns you credits at the export rate. This can significantly reduce or even eliminate your electricity bill, especially for on-grid systems.
How accurate is this solar calculator?+
This calculator provides a reliable estimate based on Pakistan averages and city-specific sun hours. For an exact quote, we recommend a free on-site survey where our engineers assess your roof, shading, and actual consumption patterns.