Gujarat's Ksquare Energy is powering houses through affordable rooftop solar systems under the PM Surya Ghar Muft Bijli Yojana. 5-year Zero Loss Guarantee compensates customers for solar failures over 48 hours. Founded by Kuldip Sorathiya with just ₹15,000, the startup made ₹74 crore in 2024. The startup aims for ₹1,000 crore by 2030.