Recently, the *Field Test Results (Release) 2025 of the National Photovoltaic and Energy Storage Demonstration Platform (Daqing Site)* was officially published. This four-year outdoor field test report authoritatively confirms the comprehensive power generation advantages of N-type TOPCon modules over BC modules. Thanks to their outstanding bifacial power generation performance, excellent temperature coefficient, and long-term stable power output, N-type TOPCon modules performed exceptionally well in multi-technology route evaluations. This fully highlights the commercial value and all-scenario adaptability of N-type TOPCon technology, while also providing a valuable reference for equipment selection in global PV power plants.
The National Photovoltaic and Energy Storage Demonstration Platform (Daqing Base) is located in the frigid region of Heilongjiang Province, where the average annual temperature is only 5.5°C. The area boasts excellent solar resources, with mainstream irradiance levels consistently ranging between 900 and 1,000 W/m². This unique environment, characterized by low temperatures and high irradiance, serves as an ideal natural testing ground for evaluating the power generation efficiency, operational stability, and environmental resilience of photovoltaic modules. The first phase of the base’s demonstration project launched in January 2022, bringing together 12 leading manufacturers and 29 types of PV module products, with a total installed capacity of 24.25 MW. Four years of uninterrupted on-site monitoring have overcome the limitations of idealized laboratory environments, yielding objective and impartial data with significant practical reference value for engineering applications.
This evaluation focused on comparing the full-cycle power generation performance of mainstream N-type TOPCon modules and N-type BC modules currently available on the market. Comprehensive data from the four-year period shows that, compared to BC modules, TOPCon modules achieved an average power gain per watt of 2.27%. More notably, this performance advantage shows a year-on-year increase: the power generation gain was 1.39% in 2022, rose to 2.68% in 2023, and further climbed to 3.49% in 2025. Four consecutive years of data fully demonstrate that TOPCon modules maintain stable long-term operation and continuously improve their power generation capacity, delivering more substantial long-term returns for power plants.
The report also notes that within the same category of TOPCon modules, the power output gap between leading brands and standard products can reach approximately 2%. This implies that module manufacturing processes, technological expertise, and quality control capabilities directly determine the final returns for end-user power plants. As one of the world’s earliest companies to achieve large-scale mass production of N-type TOPCon modules, JinkoSolar, through its mature mass production processes, continuously evolving technological capabilities, and rigorous quality control, has firmly established its Tiger Neo series modules in the top tier of TOPCon products, making them a reliable and high-quality choice for photovoltaic projects.
Four years of field testing results from the Daqing site have dispelled technical controversies with massive amounts of real-world operational data, once again confirming TOPCon’s comprehensive competitiveness as a mainstream N-type technology route. Moving forward, JinkoSolar will continue to track and publish monitoring data from major authoritative testing platforms, remain committed to technological innovation as its core, and continuously optimize module performance to provide customers with PV products and integrated solutions that deliver higher power generation, greater reliability, and increased returns.