A solar proposal is only as good as the information it's based on. Understanding how solar system planning works — consumption, roof space, backup needs and budget — helps you avoid an oversized or undersized system.
Start With Your Electricity Bills
Your last 6-12 months of K-Electric bills show monthly consumption, seasonal variation and tariff slab — the starting point for accurate sizing.
Choose the Right System Type
On-grid is lowest cost with net metering but no outage backup. Hybrid combines solar, battery and grid for backup during outages. Off-grid relies entirely on batteries for sites with no reliable grid. Compare hybrid inverters from Growatt, Solis and Inverex for the hybrid route.
Define Backup Load and Site Survey Needs
List exactly what must stay on during an outage and for how long — this sizes your inverter and battery. A proper site survey should cover roof condition, existing wiring, cabling distance and shading at different times of day.
Budgeting and Final Proposal Review
Get an itemized cost breakdown by capacity, equipment tier and installation complexity. Before signing, confirm equipment list, payment milestones, timeline, warranty and who handles net metering — see our residential and commercial solar services.
Frequently Asked Questions
How many panels do I need for my home in Karachi?
A typical household using 800-1,200 units/month usually needs a 5-10 kW system, but an accurate figure needs your actual bills reviewed.
Do I need batteries with my solar system?
Only if outage backup matters to you — a grid-tied system without batteries is the lower-cost option otherwise.