Gulshan sizing is driven by roof area as much as by bill amount. Common configurations:
120 yd² plot, ground+1 (Blocks 13-A, 13-B, 15-A typical): Bill PKR 18,000-32,000/month. 3-5 kW system. Most homes fit 8-12 panels comfortably. ROI 3.5-4.5 years.
240 yd² plot, ground+1 (Blocks 6, 7, 8): Bill PKR 35,000-55,000/month. 5-7 kW hybrid + small 5 kWh battery for evening peak. ROI 3-4 years.
400 yd² plot, ground+2 (Pheonix/Gulistan-e-Jauhar adjacent): Bill PKR 55,000-85,000/month. 7-10 kW hybrid + 8 kWh lithium. ROI 3-3.5 years.
Apartments (Munawar Chorangi, Saima Arabian Villas, Pearl Crest): Allocated rooftop only — usually 3-5 kW per flat is the max. We commonly handle these as building-society bulk filings.
For Gulshan homes with limited roof area, bifacial half-cut panels squeeze 12-15% more kWh from the same footprint vs standard monofacial. Worth the +8-10% panel premium when every square metre counts.