LONGi Unveils Revolutionary HIBC Cell Technology and 700W Solar Module at SNEC 2025

LONGi Unveils HIBC Cell Technology and 700W High-Efficiency Solar Module at SNEC 2025

On June 11, at the 18th International Solar Photovoltaic Exhibition (SNEC) 2025, LONGi officially launched its innovative HIBC (Hybrid Interdigitated Back Contact) technology and announced the commencement of mass production of related solar modules. This introduction marks a significant advancement in the solar industry, achieving a power output exceeding 700 watts on a standard module size of 2382mm by 1134mm. Additionally, these modules boast a production efficiency nearing 26%, heralding what LONGi refers to as the “25%+ Era” of photovoltaic module efficiency.

HIBC technology leverages the advantages of both HJT (Heterojunction) and BC (Back Contact) technologies, featuring a composite passivated back contact structure designed for both high and low temperatures. This is the first time such technology has been produced at scale, establishing new benchmarks within the solar sector. In April 2025, the Hamelin Solar Research Institute (ISFH) in Germany certified the conversion efficiency of HIBC solar cells at 27.81%, setting a new world record.

LONGi’s Chairman, Zhong Baoshen, highlighted at the press event that high conversion efficiency is crucial for the value and performance of photovoltaic products. He reiterated LONGi’s commitment to enhancing energy yield within standard module sizes rather than merely increasing panel dimensions, which can introduce reliability and quality issues. According to Zhong, improving unit efficiency yields greater value and durability.

The newly released HIBC modules achieve a power density of 259 W/m², which LONGi claims is superior to other 700W modules available today—many of which are larger (2384mm × 1303mm). This performance challenges the conventional belief that larger panels automatically equate to higher power output. For the first time, LONGi has introduced “power density” as a formal metric in the solar industry, advocating it as a more precise measure of module value, especially in space-constrained environments like rooftops or limited land installations.

These advancements also encompass the use of high-density packaging, which has increased cellular screen coverage from 93.2% to 95.1%, optimizing light absorption. Earlier, LONGi had introduced the EcoLife series at the Intersolar exhibition in May 2025, a commercial product based on HIBC technology that features a mass-produced cell efficiency of 27.3% and a module efficiency exceeding 25%.

LONGi’s dedication to back contact (BC) technology has grown since the introduction of its BC ecosystem in 2023. As of May 2025, the company has integrated technical solutions with 191 global partners and formalized 55 collaborations across seven key sectors, including silicon wafers, solar cells, modules, system solutions, hydrogen energy, biomass, and engineering. These initiatives have already generated revenue of approximately 1.95 billion yuan.

Beyond technical innovation, LONGi has been establishing a collaborative ecosystem to facilitate the development of next-generation solar technologies. In 2023, the company launched the STAR innovation green collaboration platform, focused on its Global Zero-Carbon Technology Innovation Center. By mid-2024, LONGi introduced a formal framework for managing the BC ecosystem, encompassing core values, cooperation principles, partner evaluation criteria, technical support systems, and value-sharing mechanisms.

Chairman Zhong concluded the launch by reaffirming LONGi’s long-term vision for the photovoltaic sector, emphasizing the importance of foundational work that supports sustainable and healthy industry development. Looking ahead, LONGi aims to strengthen global partnerships and expand the reach of its BC technology to deliver greater value across various industries and everyday applications.