WattSun Energy India Pvt Ltd. is a verified commercial solar installers based in Thiruvananthapuram, Kerala. They have a 4.8/5 rating based on 186 customer reviews on Google. They are MNRE certified. They serve residential and commercial solar customers in Thiruvananthapuram and surrounding areas. Contact them directly for a free solar quote.
For businesses in Thiruvananthapuram, commercial rooftop solar delivers compelling returns — typically 3–5 year payback with 40% accelerated depreciation tax benefit in Year 1 and GST input credit recovery. With commercial electricity tariffs at ₹8–₹17/unit in Kerala, every unit of self-generated solar power represents significant savings.
Commercial systems range from 10 kW for small shops to 500 kW+ for factories. The right size depends on your rooftop area, sanctioned load, and daytime consumption pattern. A detailed energy audit is recommended before sizing.
Under Section 32 of the Income Tax Act, solar assets qualify for 40% accelerated depreciation in Year 1. For a ₹50 lakh investment at 30% tax rate, this saves ₹6 lakh in taxes in the first year alone. Combined with GST input credit, effective cost drops significantly.
Commercial solar can be financed via equipment loans (SBI Surya Shakti, PNB, HDFC Green Loans), RESCO/PPA model (zero capex), or operating lease. RESCO is increasingly popular for businesses that want solar without upfront investment.
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Kerala allows commercial net metering up to 500 kW per connection. Excess solar power is exported at rates set by Kerala Electricity Regulatory Commission, credited on your monthly bill.
For large commercial installations, choose only experienced EPC contractors with references from similar capacity projects. Poor installation on a 100 kW+ system can cost crores in lost generation and roof damage.
Typical commercial solar in Thiruvananthapuram delivers 20–33% IRR with 3–5 year payback. Exact ROI depends on your electricity tariff slab, system size, and financing structure. High-tariff consumers (above ₹10/unit) see the fastest payback.
No — PM Surya Ghar is for residential consumers only. However, commercial installations benefit from much larger tax advantages (40% accelerated depreciation, GST ITC) which often exceed the residential subsidy in financial value.
Approximately 80–100 sq ft (7.5–9 sq meters) of shadow-free rooftop per kW of solar capacity. A 50 kW system needs roughly 4,000–5,000 sq ft. Your installer will do a detailed layout to maximize your rooftop utilization.