Yingli Solar has introduced its new Plateau Series of photovoltaic modules, specifically designed to perform in high-altitude mountain environments where extreme cold, intense solar radiation, and structural loads are common.

The launch took place at SNEC in Shanghai, marking a new technological milestone for the Chinese company.

The flagship model of the series, the YL650CF66 i/2, reaches a power output of 650W, with 24.1% efficiency, and features 210R-format N-type cells.
Its temperature coefficient is -0.29%/°C, making it an optimal solution for climates with wide thermal fluctuations.

These modules are engineered to withstand snow loads exceeding 5400 Pa, winds up to 62 m/s (equivalent to category 18 on the typhoon scale), and temperatures below -30 °C, as well as UV irradiance levels twice as high as those in lowland areas. This makes them an ideal solution for projects located above 3,000 meters, such as those in Shigatse, Futa, or the Yalong River basin.

Yingli also addresses challenges related to transportation in mountainous regions, where intense vibrations demand robust packaging design.

Additionally, low atmospheric pressure at high altitudes necessitates enhanced electrical safety standards, including higher dielectric resistance and multipoint grounding systems with reinforced cable sections.

The series incorporates innovations such as a dual-reflection backsheet, water- and UV-resistant encapsulants, dual-anchor designs, and lightning protection, significantly improving reliability and lifespan.

After undergoing TC600, UV240, and PID192 tests, the modules show less than 2% degradation—well below the 5% IEC threshold.

From an economic standpoint, the 210R modules in the Plateau series can reduce the LCOE by up to 2.76%, optimize BOS by 1.4%, and decrease the total number of modules installed per MW. In the Gonghe County project (750MW at 3,400 m altitude), this strategy has proven both technically and economically effective.

Yingli also highlights its on-the-ground expertise, pointing to the Futa PV project (20MW at 3,300 m), which has received the 5A award from the China Electricity Council for five consecutive years, as well as its involvement in the Lhasa park and the Yalong River project, located at 4,700 m altitude with an 800MW capacity.

With over 16 years of leadership in N-type technology, Yingli strengthens its global position after re-entering the top 10 for photovoltaic shipments and tenders in 2023 and 2024.

The company has been recognized by organizations such as PVEL, RETC, and EUPD for the performance and quality of its modules.

The Plateau Series thus establishes Yingli as a pioneer in the development of photovoltaic solutions adapted to extreme environments, combining technological innovation, operational experience, and economic performance—key factors for the future of large-scale solar power generation.