Solar Load Calculation Guide for Pakistan
List every appliance with watts and daily hours, separate simultaneous load from daily energy, then include practical system losses.
Build an appliance list
Record the rated watts, quantity and expected hours for every appliance. Air conditioners, pumps, refrigerators and motors need special attention because starting demand can be higher than normal running load.
Separate power and energy
Inverter size depends on simultaneous power. Panel and battery planning also depend on total daily watt hours. Do not treat these as the same number.
Plan for real conditions
Allow for inverter loss, battery limits, dust, heat and changing sunlight. Compare the estimate with several itemised quotations and ask which loads remain available during weak solar production.
Final checklist
- Record appliance watts and hours
- Check motor starting demand
- Calculate simultaneous load
- Add system losses
- Compare itemised quotations
Frequently asked questions
Can I use the result without checking it?
No. Compare it with the original source and any current official requirement that applies to the task.
Should I keep the original source?
Yes. Keep an untouched copy until you have opened and verified the final result.
Does one setting work for every case?
No. File requirements, rates, dates and official rules can differ, so use settings that match the real destination.
