Solar Savings Calculator

Estimate your system size, cost & payback — instantly.

Monthly Electricity Bill₹3,000

₹500₹10,000

Shadow-free Roof Area1000 sq.ft

100 sq.ft1,000 sq.ft

Electricity Rate (₹/unit)

TANGEDCO domestic: ₹3–12/unit by slab

System Type

On-grid & hybrid qualify for govt subsidies

Recommended System

4 kW

Generation

504 units/mo

Savings

₹3,000/mo

Net Investment

₹1,62,000

Annual Savings

₹36,000

Payback

4.5 yr

25-Year Savings

₹9,00,000

Investment Breakdown

System Cost₹2,40,000

PM Surya Ghar Subsidy- ₹78,000

Net Investment₹1,62,000

Annual Savings₹36,000

Payback Period4.5 years

25-Year Lifetime Savings₹9,00,000

Environmental Impact

CO₂ Saved Annually

5.0 tons

Equivalent Trees Planted

0 trees/yr

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Learn More About Solar

₹78,000 PM Surya Ghar Subsidy Guide TANGEDCO Tariff Rates 2026 Solar Loan: SBI vs Private Banks Net Metering: How Credits Work Compare Solar System Types

Disclaimer: Estimates are based on average Tamil Nadu conditions. Actual savings vary by location, roof orientation, shading, and usage. Contact us for a free site assessment and accurate quote.