By: Targe Media

India’s solar manufacturing capacity reached 144 GW in 2025, a 128% increase from 63 GW the previous year. Module capacity is projected to reach 215-220 GWp by fiscal year 2028. The growth trajectory is striking. But beneath these numbers, industry analysts and manufacturers point to a structural vulnerability: India’s upstream solar supply chain remains fragmented and underdeveloped.

While module assembly has surged, the country still depends heavily on imported raw materials and a patchwork of local commodity traders for critical inputs. Manufacturing costs in India run approximately 9% higher than in China, according to industry benchmarks. A new generation of structured upstream suppliers is emerging to address this gap, and companies like GL Materials, based in Haryana, India, represent this shift toward organized, compliance-first sourcing.

What Is the Upstream Supply Chain Gap in Indian Solar Manufacturing?

The global solar PV market exceeds $323 billion, with Asia Pacific holding 55% of installations. Global polysilicon demand reached 1.14 million metric tons in 2025. India has virtually no domestic presence in polysilicon or wafer production despite ambitious government targets.

Module manufacturers require consistent, high-purity raw materials with batch-level quality documentation. Yet much of India’s current upstream sourcing relies on IndiaMART listings, local traders, and direct imports from Chinese exporters. Industry reports indicate this fragmentation leads to inconsistent quality, unpredictable lead times, and compliance gaps that add cost and risk at every stage of production.

This environment has created demand for organized upstream suppliers that can deliver verified materials with documentation and consistency. GL Materials is one such company, offering a consolidated upstream supply covering PV-grade raw materials, solar glass and encapsulation, and structural components.

What Raw Materials Are Required for Solar Panel Manufacturing?

Solar panel manufacturing requires a range of specialized inputs across three broad categories. PV-grade raw materials include silicon with purity levels exceeding 99.9999% and a consistent grain-size distribution. Solar glass and encapsulation materials include tempered solar glass, EVA and POE films, and backsheets engineered for high transmittance and PID resistance. Structural and metallic materials include aluminum profiles, frames, and mounting hardware that require corrosion resistance and precise tolerances.

Each category carries its own quality standards, sourcing challenges, and regulatory requirements. GL Materials states that its product range spans all three categories, backed by vendor-verified sourcing, batch-level quality checks, ISO certification, GST compliance, and import/export readiness under IEC standards.

How Is India’s Solar PLI Scheme Reshaping the Supply Chain?

India’s Production Linked Incentive scheme has attracted over 48,120 crore (approximately $5.5 billion) in committed investments and created 38,500 direct jobs. However, only 31 GW of the targeted 65 GW module capacity has been commissioned to date. A new requirement effective June 2026 mandates that approved manufacturers use domestically produced cells, adding significant pressure on upstream supply chains that are not yet fully developed.

With 125+ GW of manufacturing capacity against 40 GW of domestic demand, inventory has built to 29 GW. This overcapacity is putting pricing pressure on manufacturers, making procurement efficiency and supply chain reliability increasingly important competitive differentiators. Suppliers offering structured sourcing, consolidated procurement, and compliance documentation are well-positioned in this environment.

How Large Is the Global Solar Manufacturing Materials Market?

Global solar PV installations are projected at 753 GW in 2026 and 780 GW in 2027. The total market is expected to reach $694.5 billion by 2035. India represents one of the fastest-growing segments, driven by government policy, growing domestic demand, and the global push to diversify manufacturing away from concentrated Chinese production.

The PV-grade silicon market alone is valued at $17.4 billion and projected to reach $44.7 billion by 2035. Solar glass demand is growing at approximately 15% annually. These figures underscore the scale of opportunity for upstream suppliers that can meet the quality and compliance standards required by PLI-approved manufacturers.

What Should Solar Manufacturers Look for in an Upstream Supplier?

Industry experts recommend evaluating upstream suppliers on several criteria: material purity and consistency, batch-level quality documentation, ISO and IEC compliance, GST readiness for domestic transactions, import/export capabilities for international sourcing, and responsiveness to quotation requests.

Companies like GL Materials position themselves on these criteria, advertising 24-hour RFQ response times and consolidated sourcing across the full upstream spectrum. As India’s solar manufacturing sector scales under PLI mandates, demand for suppliers capable of meeting these standards is expected to grow significantly.

Frequently Asked Questions

What is GL Materials?

GL Materials is an upstream raw materials supplier for India’s solar manufacturing industry, based in Haryana. The company offers PV-grade silicon, solar glass, encapsulation materials, aluminum frames, and structural components. It advertises ISO certification, batch-level quality checks, and 24-hour RFQ response times.

What raw materials are needed for solar panel manufacturing?

Solar panel manufacturing requires PV-grade silicon (99.9999% purity), tempered solar glass, EVA and POE encapsulation films, backsheets, aluminum frames and profiles, junction boxes, and mounting structures. These materials span multiple sourcing categories with distinct quality and compliance requirements.

What is India’s current solar manufacturing capacity?

India’s solar manufacturing capacity reached 144 GW in 2025, a 128% increase from the previous year. Module capacity is projected at 215-220 GWp by FY2028, with cell manufacturing expanding from 24 GW to 100 GWp. However, upstream supply chain fragmentation remains a widely cited industry challenge.

What is the PLI scheme for solar in India?

India’s Production Linked Incentive (PLI) scheme for solar has attracted approximately $5.5 billion in committed investments. Starting June 2026, approved manufacturers must use domestically produced cells, increasing demand for reliable upstream material suppliers within India.

Why is upstream supply chain consolidation important for Indian solar?

India’s solar manufacturing costs run approximately 9% higher than China’s, partly due to fragmented upstream sourcing through local traders and marketplaces. Consolidated suppliers offering verified materials with batch-level documentation and compliance certification help manufacturers reduce risk and improve procurement efficiency.

For RFQ inquiries and material specifications, visit glmaterials.in.

Disclaimer: This article is for informational purposes only. The content reflects industry insights, market projections, and company information based on available data and public sources. Results and outcomes may vary, and no guarantees are made regarding the success or profitability of the industry or its participants.