Indian module manufacturers have asked the government to delay the mandatory domestic solar cell sourcing deadline to December 2027. The industry faces a severe supply-demand gap, where module production capacity far exceeds the availability of locally made cells, putting project timelines and smaller, non-integrated companies at risk.
Indian solar module manufacturers are currently facing a significant operational hurdle as they struggle to source domestic solar cells. The Renewable Energy Manufacturers Association of India has formally petitioned the Niti Aayog to extend the deadline for mandatory local sourcing of solar cells, currently part of the government’s Approved List of Models and Manufacturers (ALMM) mandate, to December 2027. This request comes as the industry grapples with a structural mismatch between the rapid growth in module production capacity and a much slower expansion in domestic solar cell manufacturing.
The core of the issue lies in the massive difference between supply and demand. Recent industry data shows that India’s solar module production capacity has reached approximately 193 GW. In sharp contrast, domestic solar cell manufacturing capacity stands at only about 30 GW. This means that even if all local cell production were dedicated to the market, it would cover only a small fraction of the total module manufacturing capability. The shortage is particularly acute for advanced technologies like TOPCon cells, which are increasingly in demand but in short supply within the country.
This gap creates a difficult environment for non-integrated module manufacturers. These are companies that assemble modules but do not manufacture the internal cells themselves. Unlike large, vertically integrated energy companies that produce their own cells and keep them for internal projects, smaller module makers must buy cells from the open market. When supply is tight, these companies struggle to secure the necessary components to complete their orders. This has already led to production halts or significant slowdowns for several mid-sized players, as they cannot access affordable domestic cells to comply with government requirements.
The regulatory landscape adds another layer of pressure. The ALMM List-II policy mandates that solar projects connected to government schemes must use domestically produced solar cells. While the government has provided a temporary relief window for net-metering and open-access projects until December 31, 2026, it has generally avoided granting blanket extensions for all projects to maintain its focus on building a self-reliant domestic supply chain. The upcoming end of this relief window in late 2026 is a major concern for the industry, as many projects currently underway may not be able to source compliant cells in time.
For investors, this situation highlights a clear dividing line between companies. Those that are vertically integrated—meaning they control the full supply chain from cell to module—are better positioned to navigate these shortages. In contrast, non-integrated manufacturers face higher risks of project delays, increased procurement costs, and potential loss of market share if they cannot secure the required domestic inputs.
The most important monitorable for investors will be the government’s response to this petition and the pace at which new domestic cell manufacturing plants become operational. Delays in resolving this supply gap could risk pushing back India’s ambitious non-fossil fuel capacity goals, as developers may struggle to commission projects without a reliable supply of compliant modules. Shareholders should track project commissioning timelines, the availability of domestic cells in the open market, and any further policy announcements regarding the ALMM deadline.