Free Tools/Misc & Educational

Solar Panel Savings Calculator

Estimate rooftop solar panel size, installation cost and payback period.

These are rough estimates only. Actual solar sizing, cost, and savings depend on site survey, roof orientation/shading, local subsidies, and net-metering policy. Consult a certified solar installer for an accurate quote.

Fill in your consumption, rate and city to see an estimate.

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About the Solar Panel Savings Calculator

The Solar Panel Savings Calculator estimates the rooftop solar system size (in kW) you'd need based on your average monthly electricity bill, along with the approximate installation cost, expected monthly savings, and payback period before the system starts saving you money outright.

Under India's PM Surya Ghar scheme and various state subsidies, residential rooftop solar can qualify for a central subsidy that significantly cuts the upfront installation cost — combined with net metering (where excess power exported to the grid is credited), most residential systems pay back their cost within 4-7 years and then generate essentially free electricity for the remaining 15-20+ year panel lifespan.

Frequently Asked Questions

How is the required solar system size (in kW) estimated from my electricity bill?

Your average monthly units consumed (from your bill) are divided by the average monthly generation per kW of installed capacity in your region (which varies by sunlight hours), giving an approximate kW capacity needed to offset most of your usage.

What is net metering and why does it matter for savings?

Net metering lets you export excess solar power your panels generate back to the grid in exchange for bill credits, and draw grid power when your panels underproduce (like at night) — it's what makes solar economically viable for most homes rather than needing expensive battery storage.

Does the calculator account for government subsidies?

It gives a base cost estimate before subsidy; actual eligible subsidy amounts under central and state schemes vary by system size and state, so check current PM Surya Ghar and state DISCOM subsidy rates to adjust the final cost and payback period.

Is my data safe when I use Solar Panel Savings Calculator?

Most AIVEXA tools run entirely in your browser (client-side), which means your files and inputs are processed on your own device and are not uploaded to a server.

Can I use Solar Panel Savings Calculator on mobile, and is it free?

Yes — it works on any modern browser (desktop, Android or iOS) without installing an app, and it's free to use with no signup or watermark.

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