DSDEEPU SIVAPrivate Limited
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Solar ROI Calculator
For Coimbatore

Find out exactly how many solar panels you need, your payback period, and monthly savings — in 30 seconds.

☀️ Planning assumption: 5.5 sun-hours/day ✅ Enter Your Electricity Tariff 🏭 Home & Factory Modes
How It Works

3 Steps to Your Solar Estimate

01

Select Type

Choose Home or Factory — each has different energy profiles and tariff slabs

02

Set Usage

Enter your monthly EB consumption in units (kWh) — found on your EB bill

03

Get Results

Instant calculation of panels needed, system size, cost, and payback period

04

Book a Visit

Our engineer visits your site for a free detailed assessment and final quote

Your Details
Monthly EB Consumption
300 units/month
50150300400500
Use the effective ₹/unit from your latest bill. This calculator does not assume one universal TANGEDCO slab.
Market benchmark • checked 30 Sep 2026 Residential 1–3 kW: ₹77,500 / ₹1,42,500 / ₹2,00,000. Larger residential systems and C&I use indicative 2026 market benchmarks. Indicative only — final EPC price varies by module, inverter, structure, roof, approvals, GST and site conditions.
Include Loan Calculation
70% bank loan at 7% interest over 7 years
☀️
Tamil Nadu + PM Surya GharResidential rooftop assistance shown on the TN Solar Homes Portal
1 kW₹35,000 total
2 kW₹70,000 total
3 kW+₹1,00,000 max

Central CFA: ₹30k / ₹60k / ₹78k. Tamil Nadu top-up shown by the state portal: ₹5k / ₹10k / ₹22k. Eligibility, DCR/ALMM, empanelled-vendor, net-metering and commissioning conditions apply.

Verify current TN Solar Homes rules ↗

Can't find your units?

Share your EB bill — our team will calculate your exact savings and call you within 2 hours.

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Request Received!

Our solar engineer will call you on WhatsApp within 2 hours with a personalised quote.

+91 84890 90666

Your Solar Estimate

₹0
Estimated Annual Savings
System Size
0 kW
Installed capacity
Panels Needed
0
@ 400W each
Roof Area
0 sqft
Approx. needed
Est. System Cost
₹0
Installed (ex-subsidy)
Payback Period 0 years
0 yrs5 yrs10 yrs15 yrs25 yrs
Current Monthly EB Bill ₹0
After Solar (Monthly) ₹0
Monthly Savings ₹0
25-Year Total Savings ₹0
CO₂ Offset per Year 0 kg

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