Free solar calculators
Seven free tools to plan a rooftop solar system before anyone visits your roof. Every number comes from UVR’s current rate list and the published PM Surya Ghar rules, and every result shows the assumptions behind it.
- Solar savings calculator — Enter your state and monthly electricity bill to see the right rooftop solar size, system cost, PM Surya Ghar subsidy, payback period and 25-year savings.
- Rooftop area calculator — Measure your roof in feet or metres, allow for shade and obstructions, and see the maximum solar kW, number of 550 W panels and units per month it can hold.
- PM Surya Ghar subsidy checker — Answer five quick questions to check if your home or housing society qualifies for PM Surya Ghar rooftop solar subsidy and how much central support to expect.
- Solar EMI calculator — Estimate the monthly EMI on a rooftop solar loan using your own interest rate and tenure, then compare it with the electricity bill savings the system brings.
- Solar generation estimator — Enter a rooftop solar system size to estimate daily, monthly and yearly generation in units (kWh) and the approximate bill value it offsets at ₹8.5 per unit.
- Solar carbon savings calculator — Estimate the tonnes of CO₂ your rooftop solar system avoids each year and over 25 years, using the latest CEA grid emission factor for India’s power grid.
- Solar quote comparison — Compare up to three rooftop solar quotes side by side: price per kW, DCR panels, warranties, structure, net metering and AMC, plus a missing-items list.