India has built one of the world’s fastest-growing solar manufacturing industries, but competing with China on cost, scale and technology remains the industry’s biggest challenge in 2026.
India added 50.6 GW of solar module manufacturing capacity and 9.7 GW of solar cell capacity during the first half of 2026, taking cumulative capacity to 261.7 GW for modules and 36.6 GW for cells by June.
The numbers demonstrate both India’s achievement and its weakness. Module manufacturing capacity is now more than seven times domestic cell capacity, highlighting India’s continuing dependence on a solar supply chain that is much stronger downstream than upstream.
China, meanwhile, retains enormous advantages in polysilicon, wafers, cells, modules, manufacturing equipment and components, IEA’s report on solar PV supply chain indicated. The International Energy Agency expects China to remain the largest producer across the solar PV supply chain and supply more than 70 percent of projected global module demand in 2030 under its Stated Policies Scenario.
The key question is therefore no longer whether India can manufacture solar panels. It clearly can. The question is whether Indian manufacturers can produce competitive watts at Chinese scale and cost while keeping pace with rapidly changing solar technology.
India Solar Manufacturing Capacity Hits 261.7 GW
India’s solar manufacturing expansion has been extraordinary.
The country added 50.6 GW of module capacity in just six months during H1 2026, alongside 9.7 GW of new cell manufacturing capacity. Cumulative module capacity reached 261.7 GW, compared with only 36.6 GW of cell capacity.
The rapid expansion of India’s solar manufacturing capacity means the country can theoretically manufacture far more modules than its domestic market currently consumes.
But nameplate capacity does not equal competitive production.
A module factory still requires cells, glass, encapsulants, aluminum frames, junction boxes, ribbons and other inputs. Cell factories in turn depend on wafers, chemicals, silver paste, manufacturing equipment and other materials.
India’s challenge is therefore shifting from module capacity creation toward complete supply-chain development.
Why China’s Solar Manufacturing Cost Is Difficult to Beat
China’s solar advantage is much deeper than inexpensive labor.
Chinese manufacturers operate inside enormous industrial clusters containing polysilicon producers, wafer makers, cell manufacturers, module factories, solar-glass suppliers, equipment companies, chemical suppliers and logistics networks.
Scale allows manufacturers to spread factory depreciation, R&D, engineering and management expenses across billions of watts of production.
Supplier proximity reduces logistics and inventory costs. High factory utilization improves manufacturing yields and allows companies to identify production bottlenecks quickly.
China also has substantial domestic solar manufacturing equipment capability, reducing dependence on imported production machinery.
India therefore cannot close the cost gap simply by building larger module factories.
The CEEW analysis of India’s solar cell manufacturing economics identifies higher capital costs, expensive consumables, imported equipment, skill gaps and weaker R&D capabilities among the constraints facing Indian manufacturers.
The competitive battle ultimately comes down to one number: manufacturing cost per watt.
Every One Cent Per Watt Matters at Gigawatt Scale
Solar manufacturing operates on extremely thin unit economics.
A difference of only $0.01/W becomes $10 million across 1 GW of modules.
A $0.03/W disadvantage equals $30 million, while a $0.06/W difference represents $60 million for every GW.
This explains why relatively small manufacturing disadvantages become strategically important as production scales.
But factory-gate module price is not the only consideration for solar developers.
Freight, tariffs, insurance, port handling, inland transportation, inventory costs and delivery risks affect the final price at the project site.
Module efficiency also matters. Higher-efficiency modules can reduce the number of panels, structures, cables and connections required for a project and can produce more power from constrained land.
The winning module is therefore not necessarily the cheapest module. Developers increasingly evaluate price, efficiency, degradation, warranty, reliability and lifetime electricity production together.
Solar Cells Are India’s Biggest Manufacturing Gap
India’s 261.7 GW of module capacity versus 36.6 GW of cell capacity makes solar cells the clearest weak point in the domestic manufacturing chain.
Cells account for a significant portion of module value and are considerably more technologically demanding than final module assembly.
Domestic cell manufacturing faces higher equipment and financing costs, expensive consumables and continuing reliance on imported materials and machinery.
Lower factory utilization can make the problem worse.
A 5 GW cell factory running at 90 percent utilization spreads depreciation and fixed operating expenses across substantially more output than the same factory operating at 40 or 50 percent.
India’s objective should therefore not simply be to replace imported cells with Indian cells.
It needs to manufacture high-efficiency solar cells at globally competitive costs.
Factory Utilization May Matter More Than Announced Capacity
India’s huge manufacturing expansion creates another potential risk: overcapacity.
A factory’s headline GW capacity says little about its profitability if production lines operate substantially below their design output.
Depreciation, utilities, engineering, maintenance and management expenses continue even when factories are underutilized.
High utilization also produces manufacturing knowledge. Continuous production enables companies to improve yields, optimize equipment, reduce wastage and negotiate larger supply contracts.
India should therefore increasingly measure its solar manufacturing industry using actual production rather than announced capacity.
Useful metrics include factory utilization, cost per watt, manufacturing yield, throughput, downtime, energy consumption per watt, material wastage and output per employee.
China itself demonstrates the downside of excessive capacity. Huge production scale has reduced costs but has also created intense price competition and pressure on manufacturer profitability.
India needs scale — but more importantly, it needs productive scale.
Vertical Integration Is Becoming India’s Next Strategy
Indian manufacturers are responding by investing further upstream.
Major companies are expanding from modules into cells, while some are exploring wafers, ingots and related components.
Vertical integration can provide better control over quality, inventory, production schedules and supply security. It can also reduce exposure to international logistics disruptions.
But localization is not automatically economical.
If a domestically produced component costs substantially more than an imported alternative, vertical integration can actually raise module manufacturing costs.
India therefore needs economically efficient localization, not localization purely for its own sake.
The government’s Production Linked Incentive scheme for high-efficiency solar PV modules provides ₹24,000 crore to support large-scale integrated manufacturing and reduce import dependence.
The longer-term test will be whether manufacturers remain globally competitive after the benefits of policy support are incorporated into normal industry economics.
TOPCon Is Winning Today, but Solar Technology Is Moving Fast
Manufacturing cost is only half of the India-China competition. Technology is equally important.
TOPCon has become a major technology platform for Indian manufacturers because it offers higher efficiency than conventional PERC technology while using manufacturing processes that can be scaled commercially.
But the global industry is already moving toward back-contact cells, heterojunction technology, copper metallization, advanced wafer structures and tandem solar cells.
This creates a strategic risk.
A manufacturer investing billions of rupees in today’s cell architecture could face expensive upgrades if another technology rapidly achieves superior efficiency and cost.
Indian manufacturers therefore need greater R&D capabilities in passivation, metallization, wafer optimization, silver reduction, copper contacts, automation, process control and advanced inspection.
The next technology race will not be won simply by owning factories. It will be won by manufacturers capable of upgrading those factories without repeatedly stranding capital.
India Needs a Solar Supply Chain Beyond Modules and Cells
A globally competitive solar industry requires far more than module and cell manufacturing.
Solar glass, EVA and POE encapsulants, aluminum frames, backsheets, junction boxes, ribbons, specialty chemicals and industrial gases all affect manufacturing cost.
Equipment is equally important.
Reliance on imported production machinery raises capital requirements and can increase dependence on overseas suppliers for maintenance and process optimization.
Building domestic equipment and component industries could create another layer of economic value while improving supply-chain resilience.
India’s manufacturing strategy should therefore ultimately extend from modules and cells into materials, machinery, engineering, recycling and R&D.
India’s Huge Domestic Solar Market Is a Major Advantage
India possesses one advantage that few emerging solar manufacturing countries can match: enormous domestic demand.
India had approximately 168 GW of installed solar capacity by August 2026, while utility-scale projects, rooftop solar, hybrid renewable projects and energy-storage deployments continue expanding.
A large home market gives manufacturers opportunities to increase production, establish operating histories and demonstrate module performance before competing internationally.
Exports nevertheless provide the tougher competitiveness test.
Overseas developers compare Indian modules against Chinese products based on price, efficiency, degradation, warranties, delivery reliability, certifications and manufacturer financial strength.
Trade barriers can help Indian suppliers in some markets, but sustainable exports ultimately require competitive products rather than permanent dependence on tariff protection.
Bankability Could Become India’s Competitive Advantage
For utility-scale developers, the cheapest module is not always the lowest-risk choice.
Banks and investors evaluate module degradation, warranty strength, factory quality control, manufacturer financial health, field-performance history and technical support.
Indian manufacturers building long-term operating records can gradually strengthen their international bankability.
Supply-chain traceability could also become important as international buyers increasingly examine product carbon footprints, responsible sourcing and manufacturing emissions.
Manufacturers capable of providing credible data on where and how their products are manufactured could differentiate themselves in markets demanding greater supply-chain transparency.
Can India Beat China in Solar Manufacturing?
India is unlikely to displace China’s solar manufacturing dominance quickly.
China’s advantages in scale, upstream integration, supplier networks, equipment, technology and manufacturing expertise have been built over decades.
But India does not need to replicate China’s model exactly.
India already has 261.7 GW of module manufacturing capacity, a huge domestic solar market, expanding cell production and ₹24,000 crore of manufacturing incentives. It also benefits from growing international demand for geographically diversified clean-energy supply chains.
The next phase is much harder than simply announcing factories.
India must increase factory utilization, reduce cell manufacturing costs, expand upstream production, strengthen domestic suppliers and invest more aggressively in technology and R&D.
By 2030, the most important measure of India’s solar manufacturing success will therefore not be how many gigawatts of factories it has built.
It will be how cheaply, efficiently and reliably those factories can produce each watt.
India has largely won the first battle — creating solar manufacturing capacity.
The next battle is productivity.
And against China’s enormous scale, the decisive metrics will be cost per watt, factory utilization, module efficiency, technology capability and global bankability.
SHAFANA FAZAL
