Huasun to supply 1.2GW G12R rectangular heterojunction solar cells

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Huasun said the supply agreement marks the first 1GW-scale supply for rectangular heterojunction cells. Image: Huasun.

Chinese solar manufacturer Huasun has finalised a deal to supply 1.2GW of G12R (210mm) rectangular heterojunction (HJT) solar cells to an undisclosed company.

Under a cooperation agreement, Huasun will supply the solar cells, while both companies will collaborate in various areas, including research and development of HJT technology. This supply agreement also marks the first gigawatt-scale rectangular solar cells deal for HJT cells, according to the company.

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The Everest G12R rectangular HJT solar cells are built on a half-cell silicon wafer measuring 182mm*105mm, while implementing HJT3.0 bifacial microcrystalline mass production technology, advanced silver-coated copper and super multi-busbar (SMBB) processes. This integration allows for improved photoelectric conversion efficiency, which can read 35.5% for mass-produced cells.

With the company focused on HJT technology – both in cells and modules – it shipped over 3GW of products in 2023, according to Yang Zongyuan, general manager of Huasun’s sales division in China.

In terms of module efficiency, the company has also continued to improve the efficiency of its HJT modules, with the Huasun Himalaya G12-132 HJT solar module posting a power output of 750.544W and a conversion efficiency of 24.16%, as certified by Munich-headquartered solar testing and certification institute TÜV SÜD last November.

13 October 2026
San Francisco Bay Area, USA
PV Tech has been running an annual PV CellTech Conference since 2016. PV CellTech USA, on 13-14 October 2026 is our fourth PV CellTech conference dedicated to solar manufacturing in the USA. From polysilicon, wafers, ingots, cells and modules, to critical component suppliers including glass and frames, the event connects every stage of the value chain under one roof. PV CellTech USA also brings together investors, innovators, manufacturers and industry stakeholders to collaborate and strengthen domestic solar manufacturing across the United States.

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