The cost of solar power plant for home in 2026 is highly competitive, typically ranging from ₹1.5 lakh to ₹3.5 lakh for standard residential capacities (3kW to 5kW) before government subsidies. The system cost includes high-efficiency PV panels together with a certified inverter and mounting structure and professional installation services. However, when you apply for the PM Surya Ghar subsidy, the effective cost of solar power plant for home can drop by nearly 40-60%, making the net investment as low as ₹1 lakh to ₹2.2 lakh depending on the state. Premium N-type or bifacial panels which cost more at first will generate additional energy which reduces the time needed to recover your investment. A site audit with customized results should be your first choice to determine the specific funding needed for your roof based on its specific measurements.