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Calculate Your Solar Savings Now!

Unlock savings, build that dream fund, and start ticking off your checklist.

₹500₹20,000
3 Months 60 Months 120 Months
Required System Size
3.0 kW
System Size
210 sq.ft
Roof Area Needed
₹1,150
Monthly EMI*
Your Solar Savings
₹3,600
Monthly*
₹43,200
Yearly*
₹9.8L
25-Year Lifetime*
Your Solar Saves More Than Money
2,880 kg
CO₂ Mitigated / Year
48
Equivalent Trees
14,400 km
Distance Equivalent
Disclaimer:
  1. Monthly, yearly and lifetime savings are calculated over 25 years, assuming 1% annual panel degradation and 3% annual tariff inflation.
  2. EMI shown is indicative only and excludes after-sales service costs. Actual cost/EMI may vary based on city, system variant, roof height, mounting structure, lender, and savings guarantee plan chosen.
Why Use It

Why Use the 3DR Solar Calculator?

Our intelligent solar calculator is powered by region-specific data — factoring in electricity tariffs, panel degradation, inflation, and solar irradiance levels — to give you a personalised solar savings report in seconds.

  • Estimate Solar Savings: Know how much you can save each month and over 25 years.
  • Size Your Solar System: Get the ideal system capacity for your rooftop.
  • Calculate Investment & ROI: Understand your return on investment and break-even point.
  • Area Requirement: Learn how much rooftop space you'll need.
  • System Performance: See how much clean energy your system will generate — and its tree-planting equivalent.
  • Compare Financing Options: Evaluate savings and how you can go solar at ₹0 investment.
Simple Process

How It Works

In seconds, our calculator shows you the required system size, roof space needed, monthly and yearly savings, estimated cost, subsidy, and lifetime ROI.

1

Enter your PIN code and select your city.

2

Move the slider to your average monthly electricity bill.

3

Get an instant, personalised solar savings report — system size, EMI, subsidy, and 25-year ROI.

Next Steps

Your Journey with 3DR Energy

Calculate Your Savings

Use our calculator above to check your investment, ROI, and savings in seconds.

Book a Free Consultation

Our experts visit at your convenience for a detailed rooftop consultation.

Quick & Safe Installation

Get our storm-proof WindPro Mount™ system installed in as little as a day.

Ready to switch to solar at ₹0 investment?

Book a free rooftop consultation today and save up to ₹78,000 with government subsidy.

Schedule Free Visit