Bismuth Tellurium PV Demand Growth Driven by Solar Technology Expansion

Bismuth

Bismuth tellurium PV demand faces divergent growth trajectories as photovoltaic industry expansion supports bismuth consumption while trade conflicts constrain tellurium market development. The bismuth tellurium PV sector dynamics were highlighted at the 2025 China bismuth and tellurium development forum in Chenzhou, where industry experts analyzed critical materials supply chains for emerging solar technologies.

Bismuth Consumption Accelerates Through HJT Solar Battery Growth

Bismuth tellurium PV applications demonstrate strong growth potential, particularly in heterojunction (HJT) solar battery manufacturing. Global bismuth consumption reached 18,000-19,000 tonnes in 2024, with China representing approximately 40% at 6,600-6,800 tonnes according to Vital Technology Group. The HJT battery technology combines crystalline silicon advantages with thin film capabilities, requiring bismuth-based low-temperature welding materials.

Meanwhile, global HJT cell shipments surged from 4 GW in 2022 to 25 GW in 2024. Demand for low-temperature welding materials increased correspondingly from 2,000 tonnes in 2022 to 10,000 tonnes in 2024. Industry projections indicate HJT shipments will reach 80 GW in 2025, requiring 30,000 tonnes of specialized welding materials containing bismuth.

Tellurium Market Faces Trade-Related Headwinds

However, tellurium consumption encounters challenges despite growing photovoltaic industry demand. China dominates global tellurium production with 803 tonnes in 2024, representing 68% of worldwide output totaling 1,179 tonnes. The metal finds primary application in cadmium-telluride (Cd-Te) thin-film solar modules, consuming approximately 130 tonnes per gigawatt of production capacity.

Therefore, trade tensions between China and the US create uncertainty for tellurium demand growth. Major US manufacturer First Solar reduced sales guidance from 18-20 GW to 15.5-19.3 GW in April, citing trade uncertainty and higher tariffs imposed since President Trump's February inauguration. This guidance reduction directly impacts global Cd-Te consumption projections for 2025.

Building-Integrated PV Creates New Demand Channels

Furthermore, building-integrated photovoltaic (BIPV) applications present emerging growth opportunities for both critical minerals. China plans significant BIPV capacity expansion, potentially increasing tellurium utilization according to China Triumph representatives. Global Cd-Te thin-film solar cell output reached 16 GW in 2024, indicating 2,080 tonnes of Cd-Te demand for absorption layer applications.

As a result, bismuth benefits from diversified application portfolios including automobile glass ink (19% of consumption), pigments (13%), catalysts (8%), and pharmaceuticals (8%). This diversification provides stability compared to tellurium's concentrated dependence on solar module manufacturing, which remains vulnerable to geopolitical trade disruptions affecting major consuming markets.

The Metalnomist Commentary

The contrasting trajectories of bismuth and tellurium in photovoltaic applications highlight how trade policies increasingly influence critical minerals demand patterns beyond traditional supply-side considerations. While technological advancement drives fundamental growth in both materials, tellurium's concentrated exposure to US-China trade tensions demonstrates the vulnerability of specialized critical minerals to geopolitical disruptions in key end-use sectors.