LONGi’s HPBC Cells: Trailblazing High-Efficiency Solar Technology with 30GW Production Capacity by 2023


Over the next 5-6 years, BC cells are set to gain increasing favor within the photovoltaic industry due to their remarkable attributes, including high conversion efficiency and product value. Major industry leaders are expected to shift their focus toward BC cells as their capacity continues to grow, making them the predominant choice for mono crystalline cells. A substantial portion of LONGi’s product portfolio will also incorporate BC cells.


During the semi-annual performance presentation of 2023 held on September 5th, the Chairman of LONGi unveiled the company’s strategic vision for cell technology. LONGi has been dedicated to the development of HPBC (High-efficiency Passivation Back Contact) cells since 2018, marking a pivotal direction in BC cell technology. HPBC cells represent a groundbreaking advancement characterized by the absence of grid lines on the front of the cell, aligning with modern aesthetic preferences. This technology signifies a revolutionary shift following the PERC (Passivated Emitter Rear Contact) era.

The standard version of LONGi’s HPBC cell boasts a remarkable mass production efficiency of 25%. Through internal structural enhancements, HPBC technology significantly enhances light absorption and photoelectric conversion capabilities, effectively increasing component output power. In November 2022, LONGi introduced Hi-MO 6, a new generation of PV modules based on high-efficiency HPBC cell technology, achieving a mass production component efficiency of 23.3%.

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In the first half of 2023, LONGi successfully initiated mass production of HPBC cells, overcoming initial challenges to meet design yield and efficiency targets. Zhong Baoshen, Chairman of LONGi, revealed that by the end of 2023, LONGi’s HPBC cell production capacity is expected to reach an impressive 30GW. Moreover, LONGi intends to integrate BC cells into a wide range of its products.

LONGi places significant emphasis on harnessing the potential for efficiency improvements in its technology development choices. For BC cells, LONGi firmly believes in their substantial potential for enhanced performance and power generation compared to other alternatives. Additionally, the adoption of BC cell technology has led to breakthroughs in product aesthetics, making it more adaptable to various application scenarios within the distributed photovoltaic sector. By leveraging BC cells, PV modules can be produced in a variety of colors, catering to diverse user preferences and expanding the scope of photovoltaic module applications.

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