On February 17, the Huasun HJT Exclusive Gala Japan 2025 was successfully held in Tokyo, bringing together nearly 100 key stakeholders from Japan’s solar energy sector. Attendees included leading project developers, EPCs, solar distributors, investment firms, and industry media, all convening to explore the latest advancements in heterojunction (HJT) solar technology and its applications.
Japan remains a pivotal market for renewable energy, driven by progressive policies and ongoing technological innovation. As the birthplace of HJT technology, Japan has built a strong market for high-efficiency HJT solar solutions, widely adopted in both rooftop and utility-scale projects. The country aims to generate 36%–38% of its electricity from renewables by 2030, with solar power contributing 14%–16%. This ambitious target presents significant opportunities for advanced PV technologies like HJT.
Criss Jin, General Manager of Huasun’s Overseas Sales & Marketing Center, welcomed attendees, emphasizing Japan’s crucial role in HJT solar technology development and its deep connection to Huasun. “Japan holds special significance for Huasun as the origin of HJT. In 2021, we delivered our first batch of HJT modules to a 6 MW ground-mounted solar project in Hamamatsu, Shizuoka. Today, we have surpassed 10 GW in global shipments, a milestone achieved through the trust and support of our partners. With our latest technological breakthroughs and extensive commercial experience, we are excited to introduce new HJT products and system solutions to the Japanese market.”
The event featured a keynote speech by Mr. Ryu Junsei, CEO of WWB Corporation, a leading Japanese renewable energy company. As a highly respected figure in the green energy sector, Mr. Ryu highlighted the advantages of HJT technology: “HJT is widely recognized as one of the most competitive solar technologies available today. Witnessing Huasun’s rapid industrialization of this technology and its tangible benefits for PV projects is truly inspiring. I urge the industry to collaborate in accelerating the adoption of cutting-edge technologies, making solar energy more efficient and cost-effective for businesses and households worldwide.”
Ms. Kosugi Tobai, Huasun’s Business Head for Japan, provided an in-depth overview of the company’s HJT technology, product advantages, and market applications. Earlier this year, Huasun successfully began mass production of 730 W high-power modules. With a strong track record of commercial success, industry-leading power output, and efficiency, the company remains committed to ongoing R&D, aiming to push cell efficiency beyond 27% by 2025.
HJT is not only one of today’s most advanced PV technologies but also the ideal platform for the development of perovskite tandem cells, which offer the potential for significant efficiency improvements. “Huasun currently operates with 20 GW of HJT production capacity and is actively developing a 100 MW pilot line for HJT-perovskite tandem cells. In the near future, the integration of these technologies could enable solar modules to exceed 800 W in power output and achieve 28% efficiency,” Ms. Kosugi noted.
During the final session, Mr. Makoto Tsuchida, President of Ecostu Corporation, shared insights from a project development perspective. “Through extensive research and real-world performance data from Huasun, we have confirmed that HJT technology, with its high bifaciality, superior low-light performance, and excellent temperature coefficient, delivers higher energy yields compared to TOPCon or BC products. This translates into stronger investment returns, making Huasun’s HJT modules an outstanding choice for our projects.”
Huasun’s HJT product portfolio spans utility-scale, commercial & industrial, residential, and agrivoltaic applications. The company’s full range of solutions will be showcased at the upcoming World Smart Energy Week, taking place from February 19-21 at Tokyo Big Sight. Industry professionals will have the opportunity to explore Huasun’s latest innovations in HJT technology and engage in discussions about the future of solar energy.
Heterojunction in the Spotlight: Japan’s Solar Leaders Applaud HJT’s Potential at Huasun Exclusive Gala 2025
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