31kW Solar Installation at B M Sons by SolarLogix
SolarLogix successfully designed and executed a 31 kW commercial rooftop solar power plant for B M Sons, a supermarket under the hospitality & retail segment, located in Raniganj, West Bengal.
The project was implemented to reduce high electricity costs during business hours, ensure stable power availability, and help the client transition towards clean and sustainable energy, while maintaining safe grid-compliant operation and long-term reliability.
This installation serves as a reference rooftop solar project for supermarkets and retail businesses in West Bengal.
📍 Project Details
| Parameter | Details |
|---|---|
| Client Name | B M Sons |
| Industry | Hospitality / Retail (Supermarket) |
| Location | Raniganj, West Bengal |
| Installed Capacity | 31 kW Rooftop Solar Plant |
| Structure Type | TATA Power Certified Sheet-Roof Mounting Structure |
| Solar Modules | TATA Power Make Monoperc 500 Series Modules |
| Inverter Type | TATA Power Certified Solis String Inverter with MPPT |
| Grid Integration | Zero-Export Protection |
| Safety Systems | Conventional Lightning Arrester, SS304 Safety Line |
| Maintenance Access | GI Walkways (Purlin-to-Purlin) |
| Monitoring | Remote Monitoring with Live Performance Feed |
| Insurance | TATA AIG Comprehensive Solar Plant Insurance |
⚙️ Engineering & Safety Highlights
The system was engineered with a strong focus on commercial safety standards, grid compliance, and operational reliability:
✔ Zero-Export device to prevent unintended grid export
✔ Conventional lightning arrester for surge protection
✔ SS304 safety line with tensioner for rooftop working personnel
✔ GI maintenance walkways (purlin-to-purlin) for safe O&M access
✔ Certified mounting structure suitable for retail and commercial rooftops
✔ Remote monitoring for real-time performance tracking
The design ensures safe operation, easy maintenance, and consistent solar generation.
⚡ Performance & Financial Impact
-
Specific Generation: ~1300 units per kW per year
-
Estimated Annual Generation: ~40,300 units
-
Applicable Grid Tariff: ₹8.5 / unit (commercial)
-
Estimated Annual Savings: ~₹3.4 lakh
-
Payback Period: ~1 to 2 years
-
System Life: 25+ years
The solar plant significantly reduces grid electricity consumption, delivering quick payback and stable savings for the supermarket business.
🌱 Environmental Impact
This 31 kW rooftop solar installation contributes to:
🌍 ~643 tons of CO₂ emissions avoided
🌳 ~755 trees planted (equivalent)
🏭 ~319 tons of coal burn avoided
🚗 ~2.53 million km of petrol consumption offset
A positive step towards sustainable retail and responsible business operations.
