Tanfac commissions phase II of 5,000 TPA high purity solar grade DHF plant
A Milestone in India’s Clean Energy Value Chain
In a major step forward for India’s self-reliance in the solar manufacturing ecosystem, TANFAC Industries Ltd. has successfully commissioned its Phase II expansion: a 5,000 tonnes per annum (TPA) solar-grade Dilute Hydrofluoric Acid (DHF) facility. This new capacity complements the earlier Phase I facility and positions TANFAC as a key supplier of a critical raw material for the solar industry.
Why Solar-Grade DHF Matters
Critical raw material: DHF is a vital chemical in the processing of silicon, especially in etching and purification steps for solar-grade silicon wafers.
Quality requirements: “Solar grade” implies extremely high purity standards, with trace impurities kept to strict limits, because even minute contamination can degrade solar cell performance.
Strategic importance: By producing domestically, TANFAC helps reduce India’s dependence on imported DHF, supporting Atmanirbhar Bharat goals in green technology.
The Expansion: From Phase I to Phase II
In Phase I, TANFAC had set up a baseline capacity for solar-grade DHF. The commissioning of Phase II now doubles that capacity to 5,000 TPA (in addition to the Phase I base).
The plant output has already passed validation tests: one of India’s major solar energy manufacturers approved the quality during a trial run, confirming the product meets stringent solar-grade benchmarks. Chem in Digest+2Business Upturn+2
Work on the Phase II expansion was underway immediately after Phase I, and the commissioning has now been completed. Chem in Digest+1
Implications & Opportunities
Supply security: India’s solar manufacturing value chain will now have better access to a domestically produced DHF, reducing supply risks and import costs.
Cost advantage: Domestic manufacturing of a high specification chemical may reduce logistics, tariff and currency exposure risks.
Scaling further: With Phase II online, TANFAC is reportedly planning further scaling. Some reports suggest a future target of 10,000 TPA (i.e. further doubling) in the coming months. Chem in Digest
Synergies across TANFAC: The company already has expanded its hydrofluoric acid (HF) capacity recently (from ~14,850 MT to ~29,700 MT) in its broader chemical operations. Indian Chemical News+2projectblue.com+2
Challenges & Considerations
Maintaining purity: Scaling up production while preserving ultra-high purity is technically demanding — any impurity can degrade the downstream solar wafer yield.
Raw material & energy costs: The cost of feedstocks, utilities, and energy will impact the competitiveness of the product.
Regulatory & safety compliance: Handling fluorine chemicals entails strict environmental, health and safety controls.
Market absorption: The demand side (solar wafer & cell makers) must absorb the increased supply; TANFAC must secure long-term offtake agreements.
What This Means for India’s Solar Ambitions
India has ambitious goals to expand solar capacity and local manufacturing of solar modules. By vertically integrating critical inputs like DHF, India can reduce bottlenecks and enhance its competitiveness in the global solar supply chain. TANFAC’s commissioning of Phase II is a strong signal of confidence in India’s green energy future.
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