Installation & Warranties
How long does a rooftop solar installation take?
Reviewed by SolvSolar · Last reviewed:
Physical installation of a 3–10 kW residential rooftop system takes 1–3 days. The longer wait is paperwork: utility interconnection, net-metering approval and inspection typically add 2–8 weeks depending on the DISCOM or utility. Commercial projects above 100 kW usually run 4–10 weeks on site plus the same approval cycle.