Investing in rooftop solar is not just about going green—it's a strategic move that leads to substantial long-term savings. For industries in Tamil Nadu, understanding how to calculate potential savings from solar power helps make informed financial decisions.
Start by analyzing your electricity bill. Determine the average monthly units (kWh) consumed and the rate per unit charged by TANGEDCO or your electricity provider. Multiply them to get your monthly cost.
Example:
If your factory consumes 10,000 kWh/month at ₹8/kWh, your monthly bill = ₹80,000.
A 1 kW rooftop solar system generates approximately 4 units/day in Tamil Nadu. For a 100 kW system, that’s about 400 units/day or 12,000 units/month.
If your solar system produces 12,000 units/month and your electricity cost is ₹8/unit, your monthly savings =
12,000 units × ₹8 = ₹96,000/month
Suppose a 100 kW solar system costs ₹45 lakhs. With ₹96,000 in monthly savings, your annual savings would be approx. ₹11.5 lakhs.
Payback period = ₹45 lakhs / ₹11.5 lakhs ≈ 4 years
Industries can benefit from:
Accelerated depreciation (up to 40%)
Capital subsidies for MSMEs (varies by state policy)
Net metering for export benefits
These reduce the net investment and improve ROI significantly.
Rooftop solar offers Tamil Nadu industries a clear path to energy cost reduction and better financial planning. With savings starting from the first month and attractive ROI, now is the best time to switch. For a customized savings analysis, contact Dynamic Fusion Private Limited, your solar partner in Coimbatore.