On March 25, the 16th China International Clean Energy Expo opened in Beijing. Yingli Solar has prepared four scenario-based new products to be unveiled at Booth E2005-2. Names such as the PANDA Max Series, Anti-Dust Series, Anti-Glare Series and Flexible Racking PV Modules may sound like technical terms, but what truly brings them to the exhibition stand are the real challenges encountered over the past few years in the Wumeng Mountains of Yunnan, the Sichuan Plateau and the Xishuangbanna Rainforest.
Recently, the Jiaozishan (JiaoziMountain)PV Power Generation Project in Huize County, Qujing City, Yunnan Province was successfully connected to the grid. Built on the peaks of the Wumeng Mountains, the project is situated on terrain with an average slope of 60 degrees and at an altitude of 2,500 meters. Ninety-one years ago, when the Red Army crossed this area during the Long March, Mao Zedong wrote the line "The majestic Wumeng Mountains roll by like clay balls" in his poem. Today, this once perilous mountain range is covered with rows of PV modules. For this project, Yingli Solar has specially developed high-power PV modules, aiming to reduce land occupation and lower construction difficulties on steep slopes. These outcomes are recorded in the project summary, yet the technological accumulation behind them dates back much earlier.
Even earlier, for the agrivoltaic power plantproject in Xishuangbanna, Yunnan, Yingli Solar was confronted with a hot and humid environment featuring soft soil and frequent mudslides in the rainy season. The anti-PID, corrosion-resistant and low-light performance technologies accumulated during that project have since been applied to projects along the Mediterranean coast; the cold and strong UV resistance capabilities verified in the extreme environment above 5,000 meters above sea level on the Qinghai-Tibet Plateau are now incorporated into the technical parameters of the Plateau Series products. Every project delivery in extreme environments provides valuable data for the next round of technological iteration.
The exhibited PANDA Max Series is the fruit of continuous investment in the N-type technology route over the past several years, a condensation of countless test data accumulated on plateaus, in rainforests and across deserts. The Anti-Dust Series addresses the issue of sand and dust coverage in desert and gobi regions, and the forerunner of this technology was tested in a project in Ordos, Inner Mongolia. The Anti-Glare Series is a product developed out of necessity for sensitive scenarios such as Beijing Daxing International Airport, where the reflective brightness of PV modules must be reduced to below the safety threshold when installed in flight take-off and landing zones.
The same holds true for Flexible Racking PV Modules. Their development stems from complex terrains where traditional racking cannot be installed—such as mountain slopes with an average slope of 60 degrees like the Wumeng Mountains, and composite scenarios requiring "multiple uses of a single plot of land" including above water surfaces and agricultural greenhouses. Each scenario presents new challenges, and what Yingli Solar does is develop targeted technical solutions for each challenge, then track the performance of every PV module in actual operation and retain the lessons learned from every extreme environment.
Behind the glory stand the steep slopes of the Wumeng Mountain peaks, the rainy seasons of Xishuangbanna and the bitter cold of the Qinghai-Tibet Plateau. These mountains, rivers, lakes and seas do not speak, but every PV module that has stood the test answers for them with concrete results.
