Commercial Rooftop Solar Installation Tamil Nadu — Cut Operating Costs by 60%
Commercial rooftop solar slashes your monthly TANGEDCO bill by 50–70% and doubles as a tax-saving asset. A 25 kW office system typically costs around ₹13.75 lakh, generates ~36,000 units/year and saves ~₹2.87 lakh annually — paying back in under 5 years and producing free electricity for the next 20+.
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What is Commercial Rooftop Solar (Offices, Showrooms)?
Commercial rooftop solar slashes your monthly TANGEDCO bill by 50–70% and doubles as a tax-saving asset. A 25 kW office system typically costs around ₹13.75 lakh, generates ~36,000 units/year and saves ~₹2.87 lakh annually — paying back in under 5 years and producing free electricity for the next 20+. On the tax side, businesses can claim 40% Accelerated Depreciation in Year 1 (under Section 32) plus full GST input credit on the installation. Net-metering exports excess weekend & holiday generation back to TANGEDCO for credits. We design HT/LT-compatible systems with branded panels, IGBT inverters, lightning protection, remote monitoring and ESG-grade reporting for your sustainability disclosures.
How It Works
Free Site Survey
Site survey: roof load, shadow analysis, sanctioned load review.
Custom Design & Quote
Detailed engineering report + cost-benefit + tax-saving model.
Installation & Net-Metering
Procurement, installation, TANGEDCO net-metering & commissioning.
Monitoring & Support
Real-time generation dashboard + ESG reporting + AMC.
Benefits
Who It's For
- Offices & co-working spaces
- Showrooms, retail, malls
- Hotels & banquet halls
- Hospitals & clinics
Pricing Guide
Indicative ranges — final quote provided after free site visit.
| System | Suitable For | Est. Cost | Annual Savings |
|---|---|---|---|
| 10 kW | Small office / clinic | ₹5,80,000 | ₹1,15,000 |
| 25 kW | Mid office / showroom | ₹13,75,000 | ₹2,87,000 |
| 50 kW | Hospital / mall | ₹26,00,000 | ₹5,74,000 |
| 100 kW | Factory / warehouse | ₹50,00,000 | ₹11,50,000 |
Tax benefits: 40% Accelerated Depreciation in Year 1 + GST Input Credit. PM Surya Ghar does not apply to commercial.
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Official Government Sources
- PM Surya Ghar: Muft Bijli YojanaCentral rooftop solar subsidy scheme — apply & track subsidy.
- Ministry of New & Renewable Energy (MNRE)Government of India nodal ministry for solar policy.
- TANGEDCO (TNEB)Tamil Nadu Generation & Distribution Corp — net metering & tariffs.
- PM-KUSUM SchemeSolar pump subsidy scheme for farmers (up to 60%).
- National Portal for Rooftop SolarCentral registration & DISCOM coordination portal.
- Bureau of Energy Efficiency (BEE)Energy efficiency standards and labelling authority.