Enter your monthly NEA electricity bill and desired backup hours to calculate exact solar kW capacity, 550W panel count, battery bank Ah, roof area in Aana, and installation budget in Nepal.
Direct Answer: A typical urban Nepali household with a monthly NEA electricity bill of NPR 2,500 to NPR 4,000 (~250 to 350 units/month) requires a 2 kW to 3 kW rooftop solar system (4 to 6 panels of 550W Mono PERC), occupying roughly 150 to 200 sq. ft. (~0.5 Aana) of shadow-free south-facing roof area.