Comparison study shows LONGi BC outperforms solar module market
IPVF research confirms Hi-MO 9 Back Contact modules outperform TOPCon in power generation and LCOE
European third-party research institute for next-generation solar technologies, IPVF, recently conducted a comprehensive value assessment of two 50MW ground-mounted solar PV projects in France and Denmark.
The study provides an in-depth comparison of the power generation performance between LONGi’s Back Contact (BC) module Hi-MO 9 (2382*1134mm) and mainstream TOPCon products (2382*1134mm).
Multiple globally authoritative institutions, including Enertis Applus+, have previously analysed the field performance of BC versus TOPCon technologies, with all test results consistently favouring BC products.
Data reveals that LONGi’s Hi-MO 9 BC modules demonstrate significant advantages over TOPCon products in per-watt power yield, system costs, and particularly levelised cost of electricity (LCOE), delivering higher lifetime returns for large-scale centralised power plants.
LONGi’s BC technology is now driving a new wave of technological transformation and large-scale adoption worldwide through its superior return-on-investment value.
LONGi BC solar performance for first-year generation
IPVF’s analysis shows Hi-MO 9’s exceptionally low-light performance resulted in 1,210 and 1,639 hours of first-year generation in the French projects, surpassing TOPCon modules (1,187 and 1,611 hours).
Similarly, in the Danish project, Hi-MO 9 outperformed TOPCon by 21 and 20 equivalent generation hours, respectively, demonstrating robust power yield advantages.
Since its launch last year, Hi-MO 9 has gained industry recognition through multiple outdoor demonstration projects. Integrating LONGi’s proprietary HPBC 2.0 technology featuring a grid line-free front side, the module significantly enhances power output and conversion efficiency—particularly maintaining high performance under low-light conditions.
Combined with its high-temperature and humidity resistance in complex environments, Hi-MO 9 has become a globally sought-after BC product.
IPVF’s consolidated data confirms that across all four power plants analysed, Hi-MO 9 delivers 1.84% higher per-watt generation than TOPCon modules on average. This translates to greater lifetime energy output and higher commercial returns for BC-equipped power plants.
LCOE as a key metric for power plant economics
LCOE remains the critical metric for power plant economics, where module selection directly impacts project viability.
IPVF’s analysis confirms that Hi-MO 9 not only increases energy yield but also optimises project cost structures, establishing a solid foundation for maximising lifetime plant returns.
Crucially, Hi-MO 9 achieves an average 3.32% lower LCOE than TOPCon modules across the evaluated projects.
Notably, this advantage was calculated with Hi-MO 9 priced 1¢/W higher than TOPCon. As Hybrid Passivated Back Contact (HPBC) technology rapidly evolves, the LCOE benefits of Hi-MO 9 will further expand, substantially boosting end-customer returns.
With accelerating global deployment, LONGi’s high-efficiency BC solutions will elevate ROI for worldwide customers and propel the PV industry toward new value growth horizons.
From pioneering monocrystalline technology to industrialising BC solutions, LONGi consistently applies “first principles” to reduce LCOE through technological innovation. The recent inauguration of LONGi’s “Global BC Ecosystem Collaborative Innovation Centre” in Jiaxing, China, will accelerate BC industrialisation.
Moving forward, LONGi will collaborate with global partners through dual drivers—collaborative innovation and ecosystem development—delivering advanced, reliable, and economically superior BC solutions, empowering the BC era with collective wisdom.
Cover photo: graphicswizard©123RF.com
