GREW Solar has unveiled its new G12R High-Power Series, a 635 Wp solar module line designed for utility-scale installations. The unveiling marks a key development in the company’s roadmap toward full backward integration - from wafers to modules - by 2028, as India’s renewable sector pushes to localise the entire solar value chain.
“The G12R High-Power Series is designed to meet the real needs of large-scale developers while supporting India’s clean energy goals,” said Vinay Thadani, CEO & Director, GREW Solar. “We are combining advanced technology with execution strength to build a reliable, scalable manufacturing ecosystem.”
Scaling Capacity And Integration
GREW Solar currently operates a 6.5 GW module facility in Dudu, Jaipur, and is expanding capacity to 11 GW, supported by a recent Rs 300 crore fundraise. Alongside, an 8 GW solar cell plant is being set up in Narmadapuram, Madhya Pradesh, scheduled for completion by March 2026.
“Manufacturing is in our DNA. Every business we have entered—from textiles to renewables—has followed one principle: complete backward integration,” said Hardip Singh, COO, GREW Solar. “Our solar integration journey starts from ingots and wafers to cells and modules. The cell facility is under construction, and wafer and ingot lines will follow by 2028.”
The company’s integration plan also aligns with the government’s upcoming ALMM (Approved List of Models and Manufacturers) notification for wafers, expected to take effect from June 2028, which will require all modules to use domestically produced wafers and cells.
The G12R High-Power Series is built on advanced TOPCon technology, similar to the company’s M10 modules but featuring a larger cell format. GREW has increased the cell size from 182 mm x 182 mm (M10) to 182 mm x 183.75 mm (G12R), enabling higher wattage output - up to 635 Wp - without expanding the overall module size.
This optimisation delivers 6–8 per cent fewer modules per MW, lower balance-of-system (BOS) costs, and 6–7 per cent higher container power density. The design also improves power per square metre by 1.5–3 per cent, offering better space and logistics efficiency for developers.
“We’ve retained the same technology and improved the design,” Singh said. “By slightly increasing the cell dimensions, we’ve achieved higher wattage without additional footprint. It’s a practical step toward higher efficiency at scale.”
The company offers a 12-year product warranty and a 30-year performance guarantee, matching international benchmarks. While GREW currently imports cells, it plans to shift to in-house cell production once the Madhya Pradesh facility is operational.
Building A Research-led Manufacturing Base
COO said that GREW Solar has invested in a fully equipped R&D and testing lab that complies with global certification standards, allowing it to conduct internal reliability and durability tests without outsourcing. The company has also signed an MoU with IIT Bombay’s National Centre for Photovoltaic Research and Education (NCPRE) to strengthen industry-academia collaboration in research, product testing, and skill development.
“Our collaboration with IIT Bombay allows our engineers to work closely with researchers on new materials and cell technologies,” Singh said. “It ensures our teams stay ahead of the curve as next-generation technologies like perovskite move closer to commercialisation.”
Beyond module and cell manufacturing, GREW Solar is exploring opportunities in energy storage and solar panel recycling, two emerging segments in India’s clean energy ecosystem. “Storage is an area we are actively working on, and there will be announcements soon,” Singh shared. “We also plan to participate in solar panel recycling once the regulatory framework matures.”
Strengthening India’s Solar Supply Chain
India’s solar and wind generation reached record highs in 2025, helping the country avoid nearly 24 million tonnes of CO₂ emissions in the first half of the year. GREW’s capacity expansion and technology roadmap support the government’s broader goal of achieving 500 GW of renewable energy by 2030.
By combining high-efficiency module innovation, domestic manufacturing, and research partnerships, GREW Solar is positioning itself as a key enabler of India’s clean energy manufacturing ecosystem.
“Our goal is to combine innovation, reliability, and scale,” Singh said. “The G12R Series is just the beginning of a much larger journey to make India a global solar manufacturing powerhouse.” |
