Budget 2026 Boosts Solar Manufacturing: Duty Cuts on Solar Glass & Battery Storage Inputs

Budget 2026 Delivers Targeted Support for Solar Ecosystem

Union Budget 2026, presented by Finance Minister Nirmala Sitharaman, provided a significant boost to India's domestic solar manufacturing ecosystem through targeted customs duty exemptions. The measures aim to lower production costs for critical components like solar glass and lithium-ion cells, directly addressing input cost pressures for solar panel manufacturers and reinforcing the government's 'Atmanirbhar Bharat' (self-reliant India) initiative in the renewable energy sector.

Key Duty Exemptions to Lower Production Costs

The centerpiece of the announcement for the solar industry is the exemption of basic customs duty (BCD) on the import of sodium antimonate. This chemical is a crucial raw material used in the production of high-transmission, low-iron solar glass. By making this key input cheaper, the government aims to reduce the manufacturing cost for domestic solar glass producers. This, in turn, is expected to lower the overall input cost for solar module manufacturers who rely on this specialized glass, which constitutes a significant part of a panel's bill of materials.

This move is a direct response to the industry's long-standing request for support in building a vertically integrated domestic supply chain and reducing dependence on imported components, particularly from China.

Strengthening the Battery Storage Ecosystem

In a related move, the Finance Minister also proposed extending the BCD exemption on capital goods and machinery required for manufacturing lithium-ion cells for Battery Energy Storage Systems (BESS). While not a direct input for solar panels, this measure is critical for the entire renewable energy value chain.

Solar power is an intermittent source of energy, and cost-effective energy storage is the missing link to ensure round-the-clock power supply. By reducing the capital expenditure for setting up Li-ion cell manufacturing plants in India, the budget encourages domestic production of batteries. Cheaper, locally-made batteries will accelerate the adoption of solar-plus-storage solutions, creating a larger and more stable demand for solar panels from residential, commercial, and utility-scale projects.

Summary of Key Budget 2026 Measures for Solar Manufacturing

Budget 2026 Announcement	Component/Area Affected	Direct Impact
BCD Exemption on Sodium Antimonate	Solar Glass Production	Lowers manufacturing cost for domestic solar glass, reducing input costs for panel makers.
BCD Exemption on Capital Goods (Extended)	Lithium-ion Cell Manufacturing	Reduces setup cost for domestic battery cell factories, promoting the solar-plus-storage ecosystem.
Removal of Exemptions on Domestically Made Items	General Customs Policy	Encourages sourcing from local manufacturers, strengthening the domestic supply chain.

Aligning with 'Make in India' Goals

These targeted fiscal interventions signal a clear policy direction. Instead of broad subsidies, the government is focusing on strategic points in the value chain to enhance cost-competitiveness. The context of the budget also included a proposal to remove customs exemptions on items that are already manufactured domestically, further pushing industries to source locally.

For solar panel manufacturers, this means a more robust and cost-competitive local ecosystem for components like solar glass and potentially batteries. This reduces supply chain risks associated with imports and helps build a resilient domestic manufacturing base capable of meeting India's ambitious 500 GW renewable energy target by 2030.

Market Impact and Investor Sentiment

The announcements are expected to be received positively by the market, particularly by companies involved in solar glass manufacturing, battery production, and solar module assembly. The duty reliefs improve the financial viability of new and existing manufacturing facilities, potentially attracting fresh investment into the sector. For investors, this signals policy stability and a commitment to nurturing a complete domestic renewable energy manufacturing ecosystem. Companies like Borosil Renewables (solar glass) and Exide Industries and Amara Raja Energy & Mobility (battery manufacturing) are positioned to benefit from these policy measures.

Conclusion: A Tactical Step Towards Self-Reliance

Union Budget 2026 provides a tactical yet impactful boost to India's solar panel manufacturers by addressing critical input costs and supporting the adjacent energy storage sector. The customs duty exemptions on sodium antimonate and capital goods for battery cell manufacturing are precise measures aimed at strengthening the domestic value chain. While the industry's broader wishlist for measures like GST reduction on BESS and expanded PLI schemes continues, these announcements represent a concrete step toward reducing import dependency and enhancing the cost-competitiveness of 'Made in India' solar panels. The successful implementation of these measures will be crucial in translating policy intent into lower module prices and a more self-reliant solar industry.