Design Guide
Energy Load Profile
Look at your MEPCO/LESCO/KE bill. Find "Units Consumed". Exact units = accurate system sizing.
Site Dimensions
1 standard panel ≈ 7ft × 4ft (22 sqft). Measure shadow-free roof area only.
Loadshedding Hours
Set your actual daily loadshedding hours. More hours = bigger battery needed. Multan (10hrs) needs 2× more battery than Karachi (4hrs).
Cable Engineering
DC cable sized by IEC voltage-drop formula — not a flat rate. Wrong cable = energy loss + fire risk.
15% engineering buffer added to all calculations for dust, heat & cable losses.
Consumption Details
How much electricity do you use?
Site Survey Details
Tell us about your roof and location
City / Region
Loadshedding Schedule
How many hours per day in your area?
Lahore default: 8 hrs
Battery backup is sized to cover exactly this many hours. More hours = more batteries needed.
Protection & Structure
Earthing Rod Depth (meters)
How deep is the ground from your floor? The earthing rod will be installed at this depth.