Rooftop Solar for Commercial Shops & Small Businesses (2026): 40% Tax Depreciation, Costs & 2.5-Year ROI
Key Highlights & 30-Second Takeaway
Essential facts every solar applicant in India needs to know right now:
- Crush Commercial Tariffs: Retail shops, supermarkets, and clinics paying ₹12–₹15/kWh replace costly grid power with solar costing under ₹2/unit.
- 40% Accelerated Depreciation (AD): Businesses can write off 40% of the entire solar plant capital expenditure in Year 1 against taxable profits.
- Rapid 2.5 to 3-Year Payback: Because commercial power tariffs are double residential rates, commercial solar breaks even in half the time.
For Indian retail shops, showrooms, diagnostic clinics, restaurants, cold stores, and small business owners, electricity is frequently the single largest recurring monthly expense. With commercial electricity tariffs ranging from ₹11.50 to ₹16.00 per unit across states like Maharashtra, Gujarat, Delhi NCR, and Karnataka, installing rooftop solar is no longer just green — it is a vital competitive advantage.
Under Section 32 of the Indian Income Tax Act, businesses registered as proprietorships, partnerships, or private limited companies can claim 40% Accelerated Depreciation on the entire solar installation value, drastically lowering corporate income tax liabilities.
1. 5 kW Commercial Shop Solar Economics & Tax Savings
| Financial Metric | 5 kW Commercial Solar System | 10 kW Commercial Solar System |
|---|---|---|
| Total Capital Investment | ₹2,40,000 | ₹4,50,000 |
| Year 1 Tax Depreciation (40%) | ₹96,000 Write-Off | ₹1,80,000 Write-Off |
| Direct Income Tax Saved (@ 25% Slab) | ₹24,000 Cash Saved | ₹45,000 Cash Saved |
| Annual Electricity Generated | ~7,200 Units (kWh) | ~14,400 Units (kWh) |
| Annual Electricity Bill Savings (@ ₹12/u) | ₹86,400 / Year | ₹1,72,800 / Year |
| Effective Capital Payback Period | 2.5 Years | 2.3 Years |
Calculate Commercial Solar Savings & Tax Write-Off
Select your shop's monthly commercial electricity bill: