From September 25th to 26th, the 2024 PV Industry Technology Innovation Conference with the theme of “Accelerating Innovation Leadership and Welcoming the ‘Dual Carbon’ Era” was held in Chuzhou. In the “high-efficiency photovoltaic module technology and application” special session, the National Center for Solar Photovoltaic Product Quality Inspection and Testing (CPVT) made a “different application scenarios of photovoltaic product selection and evaluation program and case sharing” theme report, which shares the WINHITECH commissioned to send samples of the HJT module and TOPCon module since January 2024 power generation changes, through the empirical data show that: the HJT module relative to the TOPCon module, as the temperature increases, the HJT module will be more efficient than the TOPCon module. The empirical data shows that the gain in power generation per watt of HJT modules relative to TOPCon modules increases gradually with the increase in temperature, reaching 3.33% in July.

The demonstration project is located in CPVT Yinchuan base, using WINHITECH PV's 210HJT-66 modules and TOPCon modules, with a string installation inclination angle of 40°, and the lowest point of the module is 1 meter from the ground, ordinary sandy ground. The data collected since late January 2024 shows that the monowatt power generation gain of Runhai Solar's 210HJT-66 version modules compared with TOPCon modules has been gradually improved, and the monowatt power generation gain in July has reached 3.33%.

In July, the average daily gain per watt of HJT modules and the average daily working temperature data show that the gain per watt of HJT modules is greatly affected by the working temperature, and the higher the temperature is, the more obvious the gain is. Several single-day HJT module gains have exceeded 3.5%, showing that HJT modules have obvious power generation advantages in months with higher temperatures.

In summary, based on the actual data collected in the half-year, HJT components relative to TOPCon components, the maximum gain per watt has reached 3.33%, the temperature rise brought about by the relatively lower power loss. If superimposed on the backside of the no-shade installation method, the backside power gain can be increased, and the comprehensive advantage can reach up to 4~5%.

WINHITECH Photovoltaic is committed to in-depth investigation of the actual outdoor performance of HJT modules under diverse geographic and climatic conditions to provide customers with practical data for product selection. The company has established strategic partnerships with a number of well-known third-party organizations such as CPVT, CTC and Huaneng Qingneng Institute. Together, we have launched outdoor demonstration projects in different representative areas such as Yinchuan, Hainan and Jiayuguan.

Through the demonstration project, Runhai Solar will systematically collect and analyze the data related to power generation and climate conditions, comprehensively assess the actual performance of the product in different climatic environments, and comprehensively grasp the performance indexes and uniqueness of HJT modules. The company will continue to promote technological innovation and product optimization to ensure that HJT modules can achieve the best power generation efficiency in various environments, bringing greater benefits to customers.