Solar Calculators

System size, price and payback — do these calculations before you install solar. 19 tools. All free, no signup.

Enter your home load and find how many kW of solar you need.

Estimated price of 1kW to 25kW solar systems in PKR.

Find how many panels you need based on your daily units.

Daily updated rates for panels, inverters and batteries.

See how long until your solar investment pays for itself — ROI calculation.

Convert watts and hours into units (kWh) and cost.

Pick the right inverter size for your load

Get the best tilt angle for your solar panels from your city latitude for maximum yearly power.

Estimate winter solar panel output by system size, location and sun hours, and see the seasonal drop. Free.

Size your solar battery bank from your appliance load, system voltage and depth of discharge, with a suggested battery configuration.

Check if your appliances are safe on your inverter, get a recommended inverter size and estimated backup runtime.

Estimate customs duty, sales tax and clearing cost on imported solar panels, inverters and batteries in Pakistan.

Estimate how many years it takes for a solar system to pay for itself from your electricity bill savings.

Estimate monthly savings, yearly savings and payback period for a net metered solar system.

See payback period, monthly saving and 10 year net saving before switching your tubewell to solar power.

Net metering payback calculator Pakistan with system cost, monthly generation, import export units and tariffs for payback and savings estimates.

Estimate how much money regular solar panel cleaning saves you from recovered generation in Pakistan.

Estimate solar water heater price, tank capacity and yearly savings in Pakistan by family size.

Compare hybrid and on grid solar on cost, load shedding backup, net metering and payback time.

Other categories

Bill Check — Pakistan (36) Islamic Tools (115) PDF Tools (71) Unit Converters (101) Image Tools (67) Daily Utility Tools (449) Text & OCR Tools (88) Photo Tools (24) Daily Calculators (336) Business & Documents (369) Web & Fun Tools (56) Video & Audio Tools (88) Finance Calculators (318) Health Calculators (193) Developer Tools (253) Electrical & Energy Tools (28)