/ Calculator

Your rooftop.
Your ROI.

Move the slider to match your monthly EB bill and see the recommended system size, subsidy, monthly savings and 25-year returns.

/ Calculator

How much can you save?

Estimated for a rooftop in Tamil Nadu at ₹8/kWh with 4.2 kWh/kW/day generation. Actual results vary with roof orientation and shading.

Monthly EB bill₹4,500

₹800₹30,000

/ System EstimateLIVE

Recommended size

4.5 kW

Monthly generation

567 kWh

Monthly savings

₹4,500

Payback period

3.1 yrs

System cost (before subsidy)₹2,47,500

PM Surya Ghar subsidy− ₹78,000

Your investment₹1,69,500

/ 25-yr savings

₹14L

/ CO₂ avoided

141t