LONGi’s BC Technology and Hi-MO 9 Module Demonstrate Superior Global Performance in Field Tests
LONGi, a global leader in solar technology, has released the worldwide field performance results for its Back Contact (BC) technology platform and Hi-MO 9 module. After introducing the technology, LONGi launched a comprehensive global testing initiative across major markets. Partnering with customers, third party institutions, and its own testing facilities, the company conducted long term, precise comparative monitoring of power generation performance in diverse climates and application scenarios, including China, Europe, the Middle East, Asia Pacific, and Latin America.
This extensive testing network spans typical and extreme environments such as temperate continental, tropical, arid, and high humidity coastal regions to assess the Hi-MO 9 module’s real world performance beyond standard lab conditions. Global field data confirm that the Hi-MO 9 exceeds expectations in stability, consistency, power generation efficiency, system economics, and environmental adaptability.
Field Verification Confirms Superior Power Generation
Reports from multiple internationally recognized technical service providers consistently show that LONGi’s BC modules achieve stable watt for watt power generation gains compared to mainstream TOPCon modules, with margins ranging from 1.21% to 3.92%, excelling in specific scenarios.
European Field Data: Strong Performance in Temperate Climates
A study by Enertis Applus+ for a 47 MW single axis tracker PV project in Seville, Spain, revealed that the Hi-MO 9 achieved 2,209 equivalent full load hours in its first year, outperforming TOPCon modules by 2.4% to 3.4% in watt for watt generation. Additionally, its Levelized Cost of Energy (LCOE) was reduced by 3.92% and 4.47% compared to TOPCon-210R and TOPCon-210 models, delivering clear economic benefits.
In Northern and Western Europe, evaluations by IPVF further validated the Hi-MO 9’s performance gains. Data from two 50 MW ground mounted PV plants in France and Denmark showed an average 1.84% higher watt for watt generation than TOPCon modules, with LCOE reductions of 3.32% and 2.43% compared to TOPCon-210R and TOPCon-210 models, respectively.
China Field Data: Adaptability and Leading Performance
Under China’s varied climates, the Hi-MO 9 demonstrated exceptional efficiency. In Sanya, Hainan (high temperature, high humidity), tests by the China General Certification Center confirmed a 1.54% power generation gain over TOPCon modules, with 1.21°C lower backsheet temperatures and a 0.19 percentage point advantage in degradation rate over six months.
At the Sanmen tidal flat test site in Zhejiang, the Hi-MO 9 achieved a 1.87% power gain, with 1.26°C lower temperatures and a 0.38% degradation rate advantage. Offshore tests in Shandong by the CPVT National PV Product Quality Inspection Center further verified its high temperature stability, low light response, and long term reliability.
Technical Edge: Low Hot Spot Temperature for Enhanced Safety
The HPBC 2.0 technology in the Hi-MO 9 not only boosts power generation but also delivers revolutionary low hot spot performance. Field data confirm that under partial shading (from vegetation, dust, or structural shadows), the Hi-MO 9 significantly reduces hot spot temperatures compared to conventional modules. This advancement enhances PV plant safety by minimizing risks of material aging, power degradation, and fire hazards caused by overheating.
Whether in residential rooftops, large scale power plants, or hybrid wind-solar applications, LONGi’s BC technology has proven to be an ideal solution combining high energy yields with unmatched safety for reliable 25+ year operations.
Reshaping PV Value Standards Through Field Evidence
LONGi’s global field testing initiative for the Hi-MO 9 module goes beyond presenting power generation data it establishes a new paradigm for evaluating technological value grounded in real world, long term, and systematic verification. The findings highlight the Hi-MO 9’s comprehensive leading advantages in power generation gain, LCOE control, and environmental adaptability, marking a pivotal milestone in the broader adoption of BC technology.
This groundbreaking effort provides global PV customers with a clear, fact based decision making framework for assessing various technology pathways, ensuring informed and reliable choices for the future of solar energy.
Source: LONGi
