India Solar Cell Shortage 2026: Why Module Capacity Is Growing Faster Than Cell Capacity
India's solar industry is entering a major manufacturing transition. Understand the domestic solar cell supply constraint, ALMM List-II, module-versus-cell capacity, TOPCon and HJT manufacturing, procurement challenges and India's solar manufacturing outlook.
India's solar manufacturing industry is facing a major supply-chain mismatch in 2026: solar module manufacturing capacity has expanded much faster than domestic solar-cell capacity. The implementation of ALMM List-II has made the availability of eligible domestic cells increasingly important for applicable projects.
India's solar manufacturing sector is entering a critical phase. The country has built a large domestic module manufacturing ecosystem, but solar-cell production has historically expanded at a slower pace.
This creates a fundamental difference between the capacity available at the module stage and the capacity available at the cell stage.
The key issue is not that India has no solar cells. The bigger issue is that domestic compliant-cell supply has been catching up with a much larger module manufacturing base.
- India's module manufacturing capacity is significantly larger than its domestic solar-cell manufacturing capacity.
- ALMM List-II has made approved domestic solar-cell supply increasingly important for applicable projects.
- MNRE issued the 9th revision of ALMM List-II for solar PV cells on 21 August 2026.
- New TOPCon and HJT cell manufacturing capacity is being added rapidly.
- Cell availability can influence module production planning, pricing and working capital.
- The present situation is better described as a domestic compliant-cell supply constraint than an absolute shortage of all solar cells.
- India's longer-term objective is a deeper domestic PV supply chain covering wafers, cells and modules.
- India's Solar Manufacturing Capacity Gap
- Why Did Module Capacity Grow Faster?
- Why Is Cell Manufacturing More Difficult?
- What Is ALMM List-II?
- Why Is There a Solar Cell Supply Constraint?
- Latest ALMM List-II Developments in 2026
- Impact on Solar Module Manufacturers
- Why Cell Prices Matter
- Why Vertical Integration Is Becoming Important
- TOPCon and HJT Cell Manufacturing
- Solar Cell QA/QC Implications
- What Solar Project Developers Should Check
- India Solar Manufacturing Outlook 2026–2028
- Frequently Asked Questions
- Conclusion
India's Solar Manufacturing Capacity Gap
The Indian photovoltaic manufacturing chain can be simplified as:
Historically, India's manufacturing expansion has been strongest toward the module end of this value chain.
The result is a significant capacity mismatch between module manufacturing and cell manufacturing.
These figures should not be interpreted as actual annual production. Nameplate capacity, utilisation, yield, technology and factory ramp-up all influence actual output.
Nevertheless, the difference demonstrates the structural imbalance between India's module and cell manufacturing ecosystems.
India's earlier expansion of module manufacturing created a strong domestic assembly ecosystem. For additional background, see: India Achieves Historic Milestone of 100 GW Solar PV Module Manufacturing Capacity under ALMM .
| Manufacturing Stage | 2026 Situation | Main Challenge |
|---|---|---|
| Solar Modules | Very large domestic manufacturing base | Utilisation, demand and cell availability |
| Solar Cells | Rapidly expanding domestic capacity | Supply, technology, yield and qualification |
| Solar Wafers | Developing domestic ecosystem | Upstream capacity and technology |
| Ingots / Polysilicon | More limited domestic ecosystem | Large capital investment and scale |
Why Did Module Capacity Grow Faster Than Cell Capacity?
1. Module Manufacturing Is Easier to Scale
A PV module factory combines several components including:
- Solar cells
- Front glass
- Encapsulant
- Backsheet or rear glass
- Ribbon
- Junction box
- Frame
The manufacturing sequence generally includes:
Compared with semiconductor-style cell manufacturing, module assembly can be expanded relatively quickly.
2. Solar Demand Has Expanded Rapidly
India's solar deployment market has expanded significantly. Strong demand for photovoltaic projects has encouraged manufacturers to add module production capacity.
However, expanding module capacity does not automatically create equivalent domestic cell capacity.
Want to understand the complete material structure of a PV module? Read our detailed guide: Solar Module Manufacturing BOM – Complete Guide to Materials & Components .
Why Is Solar Cell Manufacturing More Difficult?
Solar-cell manufacturing is considerably more process-intensive than module assembly.
A simplified crystalline-silicon cell manufacturing sequence can include:
Modern cell technologies require advanced equipment, process control, yield optimisation and specialised technical expertise.
TOPCon Solar Cells
TOPCon manufacturing involves structures such as:
- Tunnel oxide layers
- Polycrystalline silicon layers
- Surface passivation
- Advanced metallization
HJT Solar Cells
Heterojunction technology can involve:
- Thin-film deposition
- Intrinsic semiconductor layers
- Doped semiconductor layers
- Transparent conductive oxide
- Specialised metallization
Consequently, cell manufacturing requires significantly higher capital, process expertise and quality control.
What Is ALMM List-II?
The Approved List of Models and Manufacturers (ALMM) is an important part of India's solar policy framework.
MNRE issued the first ALMM list for solar PV modules in 2021. The first ALMM list for solar PV cells was issued on 31 July 2025 and has been revised regularly.
ALMM List-I covers approved solar PV modules and manufacturers, while List-II covers solar PV cells and manufacturers.
For projects covered by the applicable ALMM requirements, module and cell eligibility must be considered during procurement and project planning.
Why Is There a Domestic Solar Cell Supply Constraint?
The issue is not simply that India has no cell manufacturing. The problem is the relationship between:
Available compliant domestic cell capacity
and
Demand for eligible cells from applicable solar projects.
When module manufacturing capacity is significantly larger than domestic cell supply, the cell stage can become the bottleneck.
Latest ALMM List-II Developments in 2026
MNRE's current ALMM records show that the solar-cell list has been revised repeatedly during 2026.
The latest available update is the 9th Revision of ALMM List-II for Solar PV Cells dated 21 August 2026.
This demonstrates how quickly the approved domestic cell manufacturing ecosystem is expanding.
Important: The ALMM List-II framework should be monitored regularly because MNRE is updating the approved cell manufacturers and models.
No Blanket Extension of ALMM List-II
MNRE has also clarified that there is no blanket extension of ALMM List-II. A limited window applies to certain net-metering and open-access renewable-energy projects for commissioning up to 31 December 2026.
This should not be interpreted as a general postponement of ALMM List-II requirements.
Impact on Indian Solar Module Manufacturers
The domestic cell supply constraint can directly affect module manufacturing operations.
Cell Procurement
Manufacturers need reliable access to eligible cells that match their approved module designs.
Production Planning
A high-capacity module line can still remain underutilised if the required cells are unavailable.
Inventory
Manufacturers may need to maintain appropriate cell inventory to protect production schedules.
Working Capital
Higher cell prices and inventory requirements can increase working-capital requirements.
Module Pricing
Changes in cell procurement costs can influence module manufacturing costs and selling prices.
Why Solar Cell Prices Matter
Solar cells are one of the most important components in the photovoltaic module bill of materials.
When eligible domestic cell supply is constrained, manufacturers can face increased procurement pressure.
The actual impact depends on cell pricing, module configuration, procurement contracts, project type and market conditions.
Why Vertical Integration Is Becoming Important
The current supply-chain situation creates a strong incentive for larger manufacturers to move upstream.
Instead of:
Buy Cells → Manufacture Modules
manufacturers can increasingly move toward:
Manufacture Cells → Manufacture Modules
And the longer-term integrated model is:
Potential Advantages
- Better supply security
- Greater production control
- Improved traceability
- Better capacity planning
- Reduced external procurement dependency
- Greater technology control
Challenges
- High capital investment
- Technology risk
- Process complexity
- Yield optimisation
- Skilled manpower requirements
TOPCon and HJT Are Driving the Next Cell-Manufacturing Phase
TOPCon Solar Cells
TOPCon is one of the most important technologies in India's current cell-manufacturing expansion.
Key advantages associated with TOPCon include:
- High efficiency potential
- Strong bifacial capability
- Improved temperature characteristics
- Compatibility with modern PV module architectures
- Higher power-density potential
HJT Solar Cells
Heterojunction technology is another advanced cell platform entering India's domestic manufacturing ecosystem.
HJT combines crystalline silicon with thin-film semiconductor layers and requires a different manufacturing process from conventional and TOPCon cells.
The growth of TOPCon and HJT manufacturing means that India's new cell capacity is not simply replacing older technology. It is also changing the technology profile of the domestic PV industry.
Solar Cell Shortage: QA/QC Implications for Module Manufacturers
Cell availability can create a major quality risk if manufacturers rapidly change suppliers without proper qualification.
A new cell should not be accepted simply because:
“The cell is available.”
The incoming cell should be evaluated against the approved specification and module design.
Important Incoming Cell Checks
- Cell manufacturer
- Cell model
- Cell technology
- Dimensions
- Thickness
- Electrical parameters
- Visual quality
- EL quality
- Microcrack condition
- Metallization
- Busbar configuration
- Solderability
- Traceability
- Applicable ALMM status
Cell Supplier Change Requires Engineering Control
Suppose a module manufacturer normally uses:
Even if both suppliers provide the same broad technology, such as N-type TOPCon, the cells may differ in:
- Wafer thickness
- Metallization design
- Finger structure
- Busbar configuration
- Electrical characteristics
- Soldering behaviour
- Mechanical strength
- EL characteristics
Therefore, a significant cell supplier or model change should pass through an appropriate engineering change and qualification process.
Why EL Inspection Becomes More Important
Solar-cell quality directly affects finished-module quality. Electroluminescence inspection is therefore an important quality-control tool.
EL inspection can help identify defects such as:
- Microcracks
- Broken cells
- Finger interruptions
- Inactive cell areas
- Cell damage
- Interconnection defects
AI-based EL inspection is also becoming increasingly relevant for high-volume PV manufacturing because automated systems can assist with defect detection and classification.
Cell technology and long-term reliability are closely connected. For a deeper look at degradation behaviour in modern PV technologies, read: Light and Elevated Temperature (LETID) Test – Solar PV Module Test .
Another important reliability concern involving the cell, encapsulation system and electrical environment is PID. Read: Potential Induced Degradation (PID) Test – Solar PV Module Test .
What Should Solar Project Developers Check?
The cell supply-chain issue is not limited to module manufacturers. Solar project developers and EPC companies should also consider cell availability and compliance during module procurement.
Recommended Checks
- ALMM List-I module status
- Applicable ALMM List-II requirements
- Cell manufacturer
- Cell model
- Module model
- Traceability
- Delivery schedule
- Warranty
- Supply security
- Quality documentation
The lowest module price is not necessarily the lowest-risk procurement option if cell availability and compliance are uncertain.
India's Next Challenge: Wafers and Ingots
Solving the solar-cell capacity gap is only one part of building a complete domestic PV manufacturing ecosystem.
Solar cells require wafers, while wafers require ingots and upstream silicon manufacturing.
Therefore, the long-term manufacturing chain is:
India's policy direction is increasingly moving toward deeper domestic manufacturing rather than focusing only on module assembly.
India Solar Manufacturing Outlook 2026–2028
| Period | Expected Industry Direction | Main Focus |
|---|---|---|
| 2026 | Major cell-supply transition | ALMM List-II, cell procurement and new capacity |
| 2027 | Rapid domestic cell expansion | TOPCon/HJT capacity and factory ramp-up |
| 2028 | Deeper upstream manufacturing | Wafers, cells and integrated supply chains |
| Long Term | More vertically integrated PV ecosystem | Polysilicon → Ingot → Wafer → Cell → Module |
These are directional scenarios rather than guaranteed forecasts. Actual outcomes will depend on project commissioning, utilisation, technology adoption, yields, costs and market demand.
What Should Indian Solar Manufacturers Do in 2026?
1. Secure Reliable Cell Supply
Develop long-term procurement relationships with qualified domestic cell manufacturers.
2. Qualify Multiple Suppliers
Avoid excessive dependency on a single cell supplier wherever technically and commercially practical.
3. Monitor ALMM Updates
ALMM List-II is being revised regularly, so manufacturers should monitor the latest MNRE notices and approved lists.
4. Strengthen IQC
Incoming cell inspection should verify the material against the approved cell specification.
5. Maintain Complete Traceability
A robust traceability system should connect:
6. Validate Alternative Cells
Any major change in cell supplier, technology, model or construction should be evaluated through engineering validation before uncontrolled production use.
7. Consider Vertical Integration
Large manufacturers may increasingly evaluate cell manufacturing as a strategic extension of their module operations.
Frequently Asked Questions
Why is India facing a solar cell shortage in 2026?
India has expanded module manufacturing capacity much faster than domestic solar-cell capacity. The implementation of ALMM List-II has also increased the importance of eligible domestic cells for applicable projects.
How much solar module capacity does India have in 2026?
The August 2026 ALMM List-I update brought listed module manufacturing capacity to approximately 217 GW.
What is ALMM List-II?
ALMM List-II is the MNRE framework covering approved solar PV cell manufacturers and models for applicable projects. The first List-II was issued in July 2025 and the list has been revised multiple times.
What is the latest ALMM List-II revision?
MNRE's latest listed revision is the 9th Revision of ALMM List-II for Solar PV Cells dated 21 August 2026.
Is India completely out of solar cells?
No. The issue is better described as a domestic compliant-cell supply constraint. Existing manufacturers are producing cells while significant new capacity is being added.
Will India's solar cell shortage continue?
The constraint could ease as new domestic cell factories are commissioned and existing manufacturers expand capacity. Actual supply will depend on commissioning schedules, yields, utilisation, technology and market demand.
Why are TOPCon cells important for India?
TOPCon is one of the major advanced n-type technologies being adopted for new domestic cell manufacturing capacity. It offers high efficiency potential and strong bifacial performance.
Is HJT manufacturing also growing in India?
Yes. HJT is also becoming part of India's advanced PV-cell manufacturing ecosystem, although the scale and technology mix varies between manufacturers.
What should module manufacturers check when changing cell suppliers?
Manufacturers should check cell technology, dimensions, electrical parameters, EL quality, microcracks, metallization, solderability, traceability, compatibility with the module design and applicable ALMM requirements.
Does the cell shortage affect solar module prices?
It can. If eligible domestic cell supply becomes constrained, procurement costs and working-capital requirements can increase, potentially putting pressure on module prices and project costs.
Conclusion
India's solar cell shortage in 2026 is fundamentally a manufacturing-capacity mismatch.
India has built a very large module manufacturing ecosystem, while domestic cell manufacturing has developed at a slower pace. The latest ALMM updates demonstrate that the approved domestic cell ecosystem is expanding rapidly, but it remains much smaller than the module manufacturing base.
At the same time, the implementation of ALMM List-II has made domestic compliant-cell availability increasingly important for applicable projects.
The short-term situation can therefore be summarised as:
The longer-term direction is different.
India is investing in new TOPCon and HJT cell capacity while simultaneously developing a deeper upstream manufacturing ecosystem.
The next major challenge will be moving beyond:
Cell → Module
toward:
Polysilicon → Ingot → Wafer → Cell → Module
India built the module manufacturing ecosystem first. In 2026, the race is to build the domestic solar-cell ecosystem at comparable scale.
Sources & References
MNRE: Approved List of Models and Manufacturers (ALMM) framework and latest List-I/List-II updates.
ALMM List-II: Latest revision dated 21 August 2026.
OmkarMhatre.in: Existing articles on Indian solar-module manufacturing, PV module BOM and solar-module reliability testing.
