On Saturday, April 4, 2026, Ahmedabad-based Solarium Green Energy Limited announced a transformative step in its corporate evolution with the commissioning of its 1 GW (1,000 MW) solar module manufacturing facility in Ahmedabad, Gujarat.
The project, completed in a record time of under nine months with an investment of ₹90 crore, shifts Solarium from a pure-play Rooftop Solar EPC (Engineering, Procurement, and Construction) firm to a vertically integrated renewable energy powerhouse.
The Ahmedabad Facility: Technical Prowess
The new plant is designed to produce “utility-grade” modules, moving Solarium into the high-efficiency segment of the market.
- Large-Format G12 Modules: Capable of producing panels with power outputs reaching 725 Wp (Watt-peak).
- Next-Gen Cell Tech: Optimized for TOPCon (Tunnel Oxide Passivated Contact) cells, which offer superior efficiency over traditional PERC modules.
- Advanced Configurations: The lines are equipped for half-cut cell processing (reducing resistive losses) and bifacial designs (harvesting sunlight from both sides).
- High-Precision Hardware: Includes automated tabber-stringers and advanced sun simulators to ensure every module meets international bankability standards.
Strategic Rationale: Backward Integration
In the solar EPC business, modules typically account for 50% to 60% of total project costs. By manufacturing its own supply, Solarium achieves three critical goals:
- Margin Optimization: Captive consumption allows the company to bypass the “middleman” markup, significantly boosting its EPC margins.
- Supply Chain Resilience: Reduces reliance on external Chinese or domestic tier-1 suppliers, ensuring project timelines aren’t derailed by shipping or pricing volatility.
- Revenue Diversification: Beyond internal use, the plant will sell to third-party EPC firms. At 85% utilization, the facility is projected to generate annual revenues exceeding ₹1,000 crore.
Market Context & Growth Roadmap
Solarium’s move comes at a time when the Indian government’s ALMM (Approved List of Models and Manufacturers) and Basic Customs Duty (BCD) policies have made domestic manufacturing a necessity for project viability.
- Rooftop Leadership: Solarium is already a recognized leader in the residential and C&I (Commercial & Industrial) rooftop segment. This plant allows them to offer “Made in India” solutions that qualify for government subsidies (MNRE).
- Global Ambitions: While the plant is in Gujarat, the company is positioning itself as a “global leader,” signaling future intent to export modules to the U.S. and European markets.