100 kW Solar Plant Installed in Chennai Factory with 3–4 year payback & strong ROI. Get FREE industrial solar feasibility study from ASPL.
If you are running a manufacturing unit in Chennai or Tamil Nadu, electricity cost is one of your biggest operational expenses.
Many MSME factories pay:
₹2–5 lakhs per month in EB bills
High maximum demand charges
Increasing tariff every year
This Case Study: 100 kW Solar Plant Installed in Chennai Factory shows how industrial rooftop solar reduced electricity cost and improved ROI within a short payback period.
Let’s look at the real numbers.
Factory Background
Location: Chennai, Tamil Nadu
Industry Type: Precision Engineering Manufacturing Unit
Connected Load: 150 kVA
Monthly Consumption: ~25,000 units
Average Tariff: ₹8 per unit
Annual Electricity Consumption: 3,00,000 units
Annual EB Bill: ₹24,00,000 approx.
The factory management wanted:
✔ Reduce electricity cost
✔ Improve long-term cost stability
✔ Protect against tariff hikes
✔ Improve industrial solar ROI
✔ Achieve payback within 5 years
Why 100 kW Solar Plant Was Selected
After detailed Industrial Solar Feasibility Study by ASPL, we recommended:
100 kW Rooftop Solar for Manufacturing Unit
Reasons:
Rooftop area sufficient
Daytime load consumption high
Ideal for on-grid solar system
Net metering eligible
Optimal capacity for maximum ROI
Proper sizing is critical in Industrial Solar EPC Services.
Oversizing or undersizing affects payback period.
Project Cost – 100 kW Industrial Solar Plant Cost in Chennai
The total investment depends on:
Mounting structure
Inverter configuration
Electrical integration
Net metering compliance
Engineering quality
For this Chennai factory, the structured proposal included:
✔ Engineering design
✔ Procurement
✔ Installation
✔ Grid synchronization
✔ Net metering documentation
✔ Monitoring system
The focus was not just installation — but financial optimization.
Solar Generation & Annual Savings
Estimated annual generation:
1,50,000 units
Electricity tariff: ₹8 per unit
Annual Savings: ₹12,00,000 approx.
This directly reduced:
✔ Energy charges
✔ Daytime grid dependency
✔ Exposure to tariff increases
This demonstrates how Rooftop Solar for Manufacturing Units improves electricity cost reduction strategy.
Solar Payback Period Calculation
Investment vs Savings analysis:
Annual savings: ₹12 lakhs
Estimated payback period:
Approximately 3–4 years
After payback:
Factory continues to save for 20+ years.
Total projected savings over 25 years:
Multiple crores (subject to tariff escalation).
This is why Industrial Solar ROI is attractive for MSME units.
Demand Charges Impact
Before solar:
High daytime grid draw
Peak demand spikes during CNC operations
After solar:
Reduced daytime grid dependency
Improved demand management
Lower electricity cost pressure
Solar supports Industrial Energy Cost Optimization beyond just per-unit savings.
Net Metering Policy in Tamil Nadu Impact
This project operated under:
Net Metering Policy in Tamil Nadu for Businesses
Excess generation during low-load periods was exported and adjusted.
This improved:
✔ Electricity bill reduction
✔ Solar investment return
✔ Payback stability
Without net metering, ROI calculation would differ.
Maintenance & AMC Planning
Solar Maintenance Cost for Industrial Plants was factored into ROI.
Included:
✔ Panel cleaning
✔ Inverter inspection
✔ Performance monitoring
✔ Preventive maintenance
Even after considering AMC cost, payback remained within target.
Proper maintenance protects long-term generation.
Financial Comparison – Before vs After Solar
| Factor | Before Solar | After Solar |
|---|---|---|
| Annual EB Bill | ₹24 Lakhs | Significantly Reduced |
| Solar Savings | 0 | ₹12 Lakhs |
| ROI | N/A | Strong |
| Payback | N/A | 3–4 Years |
| Long-Term Stability | Low | High |
This 100 kW Solar Plant Installed in Chennai Factory improved financial predictability.
What If the Factory Delayed Solar?
If tariff increased ₹1 per unit:
Annual cost increase ≈ ₹3 lakhs
5-year impact ≈ ₹15 lakhs
Delay increases opportunity cost.
Solar investment protects against tariff volatility.
Why This Case Study Matters for MSME Units
Many small and medium manufacturing units believe:
Solar is expensive
Payback is long
Maintenance is high
ROI is uncertain
This case study proves:
✔ Solar Payback Period for MSME can be 3–4 years
✔ Industrial Solar Maintenance Cost is manageable
✔ Industrial Solar ROI is strong
✔ Rooftop Solar for Manufacturing Units is practical
Why Choose ASPL?
ASPL, the solar division of Anushri Systech Private Limited, provides:
✔ Industrial Solar EPC Services
✔ Detailed EB bill analysis
✔ Net metering documentation
✔ Accurate ROI & payback calculation
✔ Engineering-focused installation
✔ Long-term AMC support
We focus on financial clarity before execution.
Not generic quotations.
Could Your Factory Achieve Similar Savings?
Every factory is different.
Savings depend on:
Consumption pattern
Tariff structure
Rooftop area
Demand profile
Net metering eligibility
But structured feasibility study provides clarity.
FREE Industrial Solar Feasibility Study for Chennai Factories
If you operate a manufacturing unit in Chennai or Tamil Nadu:
Get your FREE 100 kW Solar ROI Report from ASPL.
Includes:
✔ EB bill analysis
✔ Solar plant sizing
✔ Payback period calculation
✔ 10-year savings projection
✔ Maintenance cost estimate
Share your last 3 EB bills.
Receive structured financial report within 48 hours.
Final Thought
This Case Study: 100 kW Solar Plant Installed in Chennai Factory shows that:
Industrial rooftop solar is not an expense.
It is a strategic financial asset.
Factories that invest early:
Reduce electricity cost
Improve profit margins
Protect against tariff hikes
Create long-term energy stability
The real question is:
Will your factory continue paying rising electricity bills
Or convert your rooftop into 20+ years of savings?
📞 Contact ASPL today and find out your factory’s solar potential.
Turn your rooftop into a long-term revenue generator.