Gautam Solar, a leading Indian solar module manufacturer, has received Approved List of Models and Manufacturers, ALMM and Bureau of Indian Standards, BIS approvals for its high wattage 640 Wp R-Series TOPCon solar modules. With this achievement, Gautam Solar becomes one of the few companies in India to achieve these approvals for the 640 Wp R-Series modules. 

Key Features of Gautam Solar’s 640 Wp TOPCon Modules:  

Highest peak power & module efficiency: The R-Series module attains best in class peak output of 640 Wp and boasts a module-level efficiency of up to 23.69 per cent positioning it ahead of most competing modules in its category.  

Superior power density & area yield: Because of its high wattage and efficiency, the 640 Wp module can generate more energy per square meter compared to lower-wattage modules—enabling better area utilization and higher output from the same footprint.  

Reduced LCOE and optimized BOS: The high-power, high-efficiency design leads to lower Balance-of-System (BOS) cost per watt and contributes to a reduction in Levelized Cost of Energy (LCOE).  

Ideal for utility / large-scale projects: The panel is engineered to be especially suitable for ground-mounted and utility-scale solar farms, where land availability, yield per area, and cost competitiveness matter most.  

Bankable long-term reliability: The module retains the advantages of N-type TOPCon technology — minimal LID/LeTID, lower degradation rates, bifacial gain potential (up to ~30 per cent), and superior performance under elevated temperature conditions.  

Gautam Solar will be presenting its 640 Wp R-Series modules at the REI Expo 2025 held at India Expo Mart, Greater Noida, 30th October– 1st November, allowing visitors to experience the latest in high-efficiency solar technology at Hall 11, Booth R-312. 

Gautam Mohanka, Director, Gautam Solar, stated: "Achieving ALMM and BIS approvals for our 640 Wp R-Series modules is a major validation of our engineering, quality and manufacturing excellence. We are committed to not only adhering to the highest quality and compliance standards set by the Government of India but also going beyond them in our offerings to ensure maximum customer satisfaction and advance India's goal of becoming a world leader in solar power production.”  

These approvals have enabled Gautam Solar to contribute to the government’s ambitious renewable energy and sustainability goals and helping the company strengthen its leadership in solar power production.