Tamil Nadu is one of India’s largest renewable energy hubs and strongly promotes rooftop solar adoption. Under the PM Surya Ghar Muft Bijli Yojana 2025, Tamil Nadu residents can get up to 60% subsidy on rooftop solar systems. Applications are processed through TANGEDCO (Tamil Nadu Generation and Distribution Corporation Ltd.).
✅ Eligibility for Solar Subsidy in Tamil Nadu
- Only domestic electricity consumers with TANGEDCO connection.
- Rooftop ownership proof (or NOC for tenants).
- System must be installed by empaneled vendors.
- Only grid-connected systems qualify for subsidy.
📑 Documents Required
- Aadhaar card (linked with mobile)
- Recent electricity bill (TANGEDCO)
- Property proof / NOC if tenant
- Bank details (for subsidy transfer)
- Passport size photo
💰 Subsidy Rates in 2025
- Up to 3 kW: 60% subsidy (CFA)
- Above 3 kW to 10 kW: 40% subsidy
- Tamil Nadu currently does not provide an additional state-level subsidy (only central CFA applies).
🔗 How to Apply for Solar Subsidy in Tamil Nadu
- Visit PM Surya Ghar National Portal or TANGEDCO official portal.
- Register with Aadhaar & mobile OTP.
- Select a vendor from the TANGEDCO empaneled list.
- Upload documents (Aadhaar, electricity bill, bank details).
- Site inspection & DISCOM approval.
- Rooftop system installation by vendor.
- Net meter installation by TANGEDCO.
- Subsidy amount credited within 30–60 days.
📊 Cost of Solar Installation in Tamil Nadu (2025)
| System Size | Approx. Cost (₹) | Subsidy (₹) | Net Cost (₹) |
|---|---|---|---|
| 1 kW | 52,000 | 31,200 | 20,800 |
| 2 kW | 98,000 | 58,800 | 39,200 |
| 3 kW | 1,42,000 | 85,200 | 56,800 |
| 5 kW | 2,35,000 | 1,17,500 | 1,17,500 |
(Final pricing depends on rooftop structure and vendor)
⚡ Net Metering in Tamil Nadu
- Available up to 10 kW for residential consumers.
- Excess solar power exported to grid.
- Monthly bill adjustment under net metering policy of TNERC.
- Credits carried forward up to 12 months.
🏠 Example: 3 kW Solar in Chennai
- Average monthly generation: ~360 units
- Average electricity bill: ₹2,400–₹2,800
- After solar: Almost zero bill (fixed charges remain)
- Payback period: ~3.5–4 years
❓ FAQs
Q1: Who is eligible for rooftop solar subsidy in Tamil Nadu?
→ Domestic TANGEDCO consumers with grid-connected systems.
Q2: How much subsidy is available for 5 kW solar in Tamil Nadu?
→ Around ₹1,17,500, making solar highly affordable.
Q3: Is net metering mandatory for subsidy?
→ Yes, net metering is compulsory.
Q4: Can tenants apply for solar subsidy in Tamil Nadu?
→ Yes, but with landlord’s written NOC and TANGEDCO approval.
🚀 Conclusion & CTA
With abundant sunlight, Tamil Nadu is ideal for rooftop solar. Through PM Surya Ghar subsidy 2025, you can save up to 60% of costs and enjoy free electricity for 25 years.
