Solar tools / estimate
Your solar energy estimate dashboard.
Pick a solution, tune your details, and watch system size, savings, subsidy, and payback update live — built for Tamil Nadu homes, farms, businesses, and institutions.
Live estimate
Adjust anything — numbers update instantly.
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TELL US ABOUT YOUR HOME
For your home
Roof Type
Monthly EB Bill
₹4,000
Your Monthly Bill: ₹4,000. Estimated Usage: ~769 Units/mo.
Key Details: Based on Tamil Nadu generation, tariff, and current central subsidy assumptions.
Your tailored estimate
Home · live results
5 kWp
System Capacity
₹40,997
Estimated Annual Savings
₹78,000
PM Surya Ghar CFA
4.8 yrs
System Payback
Base Solar Estimate
Gross Cost
₹2,75,000
Less Subsidy
−₹78,000
Final Net Cost
₹1,97,000+ ₹37,000 battery
Financing EMI: ₹3,901/mo at 7% · 5 yrs
Open EMI calculatorOptional Add-On
Battery backup
Backup Duration
LED bulbs ×6
54 W
Fans ×3
225 W
TV ×1
100 W
Lights ×2
40 W
Additional Battery Cost
₹37,000
2 × 150 Ah batteries · 2 × ₹18,500 (484 W × 4 h ÷ 1440 Wh usable)
5.58 t CO₂ / year · 251 trees equivalent
Over 25 years: ~139.5 tonnes avoided
Subsidy rates are set by the Government of India and Tamil Nadu state government. They can be revised without notice. Always verify current figures at pmsuryaghar.gov.in or teda.in before signing any agreement. Aadhi Solar will assist you in confirming the exact subsidy applicable to your installation.
Live values from Tamil Nadu calculator assumptions — confirm with a site survey before ordering.