Commercial Solar for Indian Businesses — Complete 2026 Guide
Indian businesses face some of the highest commercial electricity tariffs in Asia (₹8–16/unit). Solar offers the fastest payback for commercial establishments — often 3–4 years.
Commercial Solar System Sizes & Costs
| Monthly Bill | System Size | Installation Cost | Annual Savings | Payback |
|---|---|---|---|---|
| ₹25,000 | 25 kW | ₹12–16 lakh | ₹2.5–3.5 lakh | 4–5 years |
| ₹50,000 | 50 kW | ₹22–30 lakh | ₹5–7 lakh | 4–5 years |
| ₹1,00,000 | 100 kW | ₹40–55 lakh | ₹9–14 lakh | 3–4 years |
| ₹2,00,000+ | 200–500 kW | ₹75 lakh–2 crore | ₹18–30 lakh | 3–4 years |
Accelerated Depreciation — The Biggest Tax Benefit
This is the most underutilized benefit for Indian businesses:
- Solar systems qualify for 40% accelerated depreciation in Year 1
- On a ₹50 lakh system, that's ₹20 lakh depreciation deduction
- At 30% tax rate: ₹6 lakh immediate tax saving
- Effective net cost: ₹50 lakh − ₹6 lakh tax saving = ₹44 lakh
Types of Commercial Solar Installations
On-Site Rooftop Solar (Most Common)
- Panels on factory/office/warehouse roof
- Direct consumption — highest savings
- Net metering for excess units
- Ideal for: factories, warehouses, hospitals, hotels, malls
Open Access Solar (For Large Consumers)
- Solar plant at a different location, power wheeled via grid
- For consumers >1 MW demand
- 30–40% cheaper power than DISCOM
- Requires open access license from state regulator
Commercial Net Metering vs Gross Metering
- Net metering: Only excess units exported — balance billing
- Gross metering: All solar units sold to DISCOM at lower rate, buy back at higher rate — usually less beneficial
- Most states allow net metering up to 1 MW for commercial consumers
How to Start Your Commercial Solar Project
- Energy audit: How much do you consume, when, and from which loads
- Roof assessment: Available area, structural capacity, shading analysis
- Get quotes from minimum 3 solar EPC companies
- Evaluate: Price, panel brand, inverter brand, warranty, O&M terms
- Finance: Own funds, solar loan, or RESCO (no upfront cost) model
Find Commercial Solar Installers
Browse verified commercial solar EPC companies on GoSolarIndex across all major Indian cities.