Gujarat-based GB Solar Technologies has commissioned a 2 GW solar module manufacturing facility in Karjan, Vadodara.

GB Solar said the facility was commissioned on June 1, 2026, with an annual production capacity of 2 GW.

It said the project involved an investment of approximately ₹2.5 billion (~$26.4 million).

The facility will manufacture solar modules using tunnel oxide passivated contact (G12R and M10R), heterojunction, and back contact technologies. The production lines can produce modules rated at 650 Wp and above.

GB Solar said the modules will serve utility-scale solar projects, engineering, procurement, and construction companies, independent power producers, commercial and industrial consumers, government and public-sector renewable energy projects, corporate captive power projects, and export markets.

The company is also in the process of obtaining inclusion under ALMM for both modules and solar cells.

The company has outlined plans to expand its module manufacturing capacity at the Karjan campus from 2 GW to 4 GW. It also plans to set up a 2 GW solar cell manufacturing facility and increase backward integration to strengthen its supply chain.

Apart from module manufacturing, GB Solar services include engineering, procurement, and construction projects with more than 1,000 solar EPC projects totaling a cumulative capacity of 30 MW.

MNRE has added 193 GW of solar modules and over 30 GW of solar cells under ALMM.

In a big boost to the domestic manufacturing sector, India mandated the use of domestic solar cells listed under ALMM-II from June 2026.

According to Mercom India’s State of Solar PV Manufacturing in India 2026 report, in terms of technology, monocrystalline cells accounted for more than 57% of production capacity, followed by TOPCon at over 39%. Polycrystalline cells accounted for a small share, approximately 3.5%.