Solar & Battery
Use the solar panel calculator to size panels and an inverter from your daily load, and the battery backup calculator to find how long a battery will run your load during load-shedding.
2 calculators
Sizing a system
Add up the watts of the appliances you want to run and the hours you run them to get daily energy in kWh. Panel capacity is that energy divided by the effective sun hours for your city, with an allowance for losses from heat, dust and wiring. Batteries are sized from the load and the backup hours you need, keeping within the safe depth of discharge of the battery type.
Net-metering and billing rules for solar users in Pakistan have been revised, so check your distribution company's current policy before planning to export power to the grid.