129kW Solar Installation at Secretariate Building, Gangtok by SolarLogix
SolarLogix successfully designed and executed a 129 kW commercial rooftop solar power plant for Secretariate Building, located in Gangtok, West Bengal.
This project was executed using Tata Power Solar–certified equipment and standards, ensuring high performance, safety, and long-term reliability. The system enables net metering benefits while significantly reducing the client’s commercial electricity expenditure.
This installation stands as a reference Tata-standard commercial solar project in North Bengal.
📍 Project Details
| Parameter | Details |
|---|---|
| Client Name | Integrated Engineering Solutions for High Court, Gangtok |
| Project Type | Commercial Rooftop Solar |
| Location | Gangtok, West Bengal |
| Installed Capacity | 129 kW Rooftop Solar Plant |
| Structure Type | Tata Power Solar Certified Sheet-Roof Structure |
| Solar Modules | Tata Power Make Bifacial Solar Modules (610 Wp) |
| Inverter Type | Tata Power Certified Solis String Inverters |
| Grid Integration | Net Metering Enabled |
| Safety Systems | Pre-installed Lightning Arrester, SS304 Safety Line |
| Maintenance Access | GI Walkways (Purlin-to-Purlin) |
| Monitoring | Remote Monitoring & Performance Tracking |
| Cleaning System | Manual Module Cleaning System |
| Insurance | Tata AIG Solar Insurance |
| O&M Support | 5-Year Annual System Health Check-up |
⚙️ Engineering & Safety Highlights
The plant was engineered strictly as per Tata Power Solar design and safety guidelines, ensuring:
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✔ Net metering–ready electrical architecture
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✔ Pre-installed lightning protection for surge safety
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✔ SS304 safety line with tensioners for rooftop personnel
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✔ GI walkways enabling safe and efficient O&M access
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✔ String inverter design for redundancy and ease of maintenance
This ensures high uptime, operational safety, and predictable performance over the system lifetime.
⚡ Performance & Financial Impact
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Specific Generation: ~1200 units per kW per year
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Estimated Annual Generation: ~1.55 million units
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Applicable Commercial Tariff: ~₹8.5 / unit
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Estimated Payback Period: ~4 to 4.5 years
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System Design Life: 25+ years
The system delivers stable energy savings, reduced grid dependency, and protection against future tariff escalation.
🌱 Environmental Impact
This 129 kW Tata-standard solar plant contributes annually to:
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🌍 ~2,676 tons of CO₂ emissions avoided
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🌳 ~1,327 trees planted (equivalent)
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🏭 ~3,141 tons of coal burn avoided
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🚗 ~10.5 million km of petrol consumption offset
Supporting clean energy adoption and ESG goals.
