Residential rooftop solar company SolarSquare has raised $53 million in a funding round led by B Capital. The round also saw participation from existing investors Lightspeed, Elevation Capital, Lowercarbon Capital, Rainmatter by Zerodha, and Good Capital. The startup has installed solar systems across about 50,000 homes and is running at an annual revenue run rate of over ₹1,000 crore.