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					</table>India&#8217;s rapidly expanding solar cell manufacturing industry faces a challenge beyond adding production capacity: achieving consistent efficiency, yields, reliability, and quality at scale.
Adding gigawatts of nameplate capacity does not automatically translate into cells that match the performance and consistency of those produced by more mature global manufacturing ecosystems, particularly China. Industry experts say the difference should be viewed less as an inherent quality gap and more as a manufacturing maturity gap built over years of large-scale production.
Hardip Singh, Chief Operating Officer at <a href="https://thegrewsolar.com/" target="_blank" rel="noopener">GREW Solar</a>, said, “For many years now, Chinese producers have reaped the rewards of large-scale production along with constant process development and a well-developed supply network. This wealth of experience translates into achievements in wafer quality, process control, equipment tuning, yield improvement, and defect reduction. India is building such an ecosystem much faster.”
He explained that high-quality cell production requires controlling hundreds of parameters across manufacturing stages, including texturing, diffusion, deposition, passivation, metallization and firing. “The good news is that Indian manufacturers are now starting to use state-of-the-art TOPCon technologies and develop the operational expertise needed to manage these processes.”
India&#8217;s solar cell manufacturing capacity has <a href="https://www.mercomindia.com/solar-cell-capacity-under-almm-grows-to-39-4-gw" target="_blank" rel="noopener">increased</a> sharply from an overall domestic manufacturing base of approximately 4.7 GW in September 2022 to about 35.5 GW as of August 2026. Manufacturers are also transitioning toward higher-efficiency technologies such as tunnel oxide passivated contact (TOPCon).
&#8220;China has had the advantage of building scale, supplier ecosystems, equipment expertise and process know-how over a much longer period. India, on the other hand, is compressing that learning curve very rapidly,&#8221; said Dhruv Sharma, CEO of <a href="https://jil-jupiter.com/" target="_blank" rel="noopener">Jupiter International</a>.
“The conversation is increasingly about efficiency, yield, technology transition and reliability. That is an important sign of a maturing industry, and we expect the performance gap with established global manufacturing ecosystems to continue narrowing,” he added.
Technology Adoption is Only the First Step
Access to manufacturing technology is another critical factor. India remains dependent on imported equipment for significant parts of the solar manufacturing value chain, with China among the major suppliers.
China has built an extensive ecosystem spanning photovoltaic manufacturing equipment, materials, process expertise, and production technology. Indian manufacturers can import advanced production lines, but equipment access alone does not transfer the manufacturing experience required to operate those lines consistently at high yields.
Singh said India should therefore focus on building capabilities in equipment servicing, process engineering, automation, troubleshooting, and technology optimization. Foreign technology partnerships can accelerate capacity building, but domestic manufacturers ultimately need to internalize process knowledge and engineering capabilities to become globally competitive, he said.
Sharma described the industry&#8217;s technological progression as moving from technology adoption to technology absorption and eventually to technology creation and localization, with India now progressing through the absorption stage.
Sharma said manufacturing performance ultimately depends on the expertise developed around the production line. “Those outcomes are created by the engineering teams operating the line, process integration, equipment tuning, preventive maintenance, data analysis, and continuous yield improvement,” he said.
A manufacturer can therefore possess similar equipment and technology to an established global producer while achieving different commercial outcomes.
A leading manufacturer said stronger technology partnerships with established Chinese cell manufacturers could help India close this gap faster. Joint ventures with leading Chinese players could allow domestic manufacturers to build production capacity while their engineering teams gain experience alongside established technology providers.
“However, investment and ownership conditions can make such partnerships difficult, particularly when technology owners are expected to transfer know-how without retaining adequate control over the venture. Without deeper technology collaboration, simply adding new manufacturing lines may not result in internationally competitive cells,” the manufacturer added.
Singh said the key requirement is not simply basic technical knowledge but years of practical experience operating high-capacity production lines.
“It covers a wide spectrum of the industry from process integration to statistical process control, matching various types of the same category of equipment, defect identification and analysis, yield control, wafer quality management and accelerated root cause identification. Developing this expertise requires tight collaboration between manufacturers, equipment suppliers, and research institutions instead of continued reliance on external technology vendors.”
Upstream Dependence Adds Another Constraint 
While module and cell capacities have expanded rapidly, India’s domestic ecosystem for polysilicon, ingots, wafers, specialized consumables, and manufacturing equipment remains considerably less developed.
This imbalance matters not only for supply-chain security but also for manufacturing quality and consistency.
“The larger advantage of localization is strategic. A stronger domestic upstream ecosystem can shorten lead times, improve supply visibility, enable closer collaboration between wafer and cell manufacturers, and gradually reduce exposure to external shocks,” Sharma noted.
Singh said upstream integration significantly influences manufacturing resilience and competitiveness. Wafers play a crucial role because their resistivity, thickness, surface quality, crystal properties, and defect characteristics can all affect downstream cell performance.
When manufacturers import essential materials and components, they must consider logistics, lead times, exchange-rate fluctuations, specification stability, and supply-chain disruptions, all of which can affect production planning and cost forecasting.
“India&#8217;s prospects depend on its ability to increase production efficiency in the upstream processes of ingot and wafer manufacturing and, at the same time, develop local suppliers for consumables and chemicals,” Singh said.
Scale Versus Yield 
Nameplate capacity alone does not indicate how efficiently a manufacturing line is operating. Two plants with identical rated capacity can produce materially different volumes of saleable cells depending on utilization, first-pass yield, equipment uptime, efficiency distribution, breakage rates, and defect levels.
Stakeholders say the next phase should therefore place as much emphasis on manufacturing performance as on installed capacity.
“Metrics such as cell efficiency, first-pass yield, degradation performance, defect rates, equipment uptime and consistency should be treated as equally important as installed GW capacity. As domestic manufacturing expands under frameworks such as ALMM List-II, the ability to meet quality and performance requirements consistently will become increasingly important,” Singh said.
This will become particularly important as domestic cell demand rises. ALMM List-II requirements increase the importance of domestically manufactured cells for covered projects, raising the stakes for manufacturers to expand output without compromising yield or consistency.
The policy framework can create demand for domestic cells, but sustained competitiveness will ultimately depend on whether manufacturers can deliver quality, reliability, and cost performance without relying on regulatory protection alone.
Closing the Manufacturing Maturity Gap 
Industry insiders say greater investment in upstream integration will be critical to narrowing the manufacturing maturity gap.
“Over the next three to five years, India can meaningfully narrow the quality gap with China, but this will require greater investment in upstream integration, particularly wafer and polysilicon capacity. Additionally, ancillary manufacturing facilities such as silver paste, screens, and other materials, alongside a strong focus on process optimization and workforce capability building, are required. We need to build equipment manufacturing capability, which is a major missing link in India. Significant efforts are also required to build technology partnerships and process R&amp;D infrastructure. All of these are necessary to achieve the process maturity and quality consistency required to compete globally,” said Kunal Saxena, Head, Strategic Investments at <a href="https://ampin.energy/" target="_blank" rel="noopener">AMPIN Energy Transition</a>
Sharma expects the next two to three years to be less about proving that India can build manufacturing capacity and more about deepening manufacturing capabilities through higher yields, narrower efficiency distributions, lower material consumption, stronger equipment localization, and greater upstream integration.
Ultimately, India’s competitiveness will be determined not by the manufacturing capacity it builds, but by its ability to consistently produce high-quality cells at competitive costs and at scale.

India’s Solar Cell Manufacturing Faces Test of Quality at Scale

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