Housing societies in India can significantly reduce common area electricity costs by installing rooftop solar systems, supported by the PM Surya Ghar Yojana which provides a subsidy of ₹18,000/kW for up to 500 kW. The investment typically offers a 3 to 5-year payback period, with 25-30 years of free electricity generation. Key requirements include being a registered society with a PAN card and using DCR (Made-in-India) solar panels.

