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LONGi Solar is a world leading manufacturer of high-efficiency mono-crystalline solar cells and modules.

2018-11-23 | Hainan

Stellar Results by LONGi Solar’s Monocrystalline Modules in CTC’s Outdoor Tests. Three-Year Degradation Rate Only 1.06%

LONGi Posted on 2018-11-23

November 23, 2018. LONGi Solar was recognized by China Building Material Test & Certification Group Co., Ltd. (“CTC”) as a “Top Runner” in the power degradation of photovoltaic modules. This marks the third year that LONGi Solar has won the honor since 2016.

The outdoor aging test showed average degradation of LONGi Solar’s photovoltaic modules to be 0.38% in the first year, 0.32% in the second year, and 0.36% in the third year, with all 3 years ranking first among all monocrystalline modules tested. Cumulative three-year degradation was just 1.06%.

CTC carried out quality supervision and spot checks at the outdoor test base in Hainan. Products from enterprises that meet the Standard Conditions for the Photovoltaic Manufacturing Industry of the Ministry of Industry and Information Technology test criteria are published once a year. To ensure objectivity and impartiality, the tests are conduced “blind” - CTC does not inform enterprises of spot checks, and samples are randomly selected from production lines or warehouses and transported to the test base.

Since March 2015, the CTC, entrusted by the Ministry of Industry and Information Technology, has carried out this quality supervision and spot checks on enterprises’ products to study the performance degradation and lifetime assessment methodology of modules and systems under typical climatic conditions in China. This will provide the government with a fair and authoritative database and a product quality analysis report for industry management. The database is the first national outdoor substantive information for photovoltaic products in China, and is an important technical support reference for the Standard Conditions for the Photovoltaic Manufacturing Industry and the “Top Runner” program of the Ministry of Industry and Information Technology.

This year’s certification once again reaffirms the excellent performance, high quality and reliability of LONGi Solar’s monocrystalline modules that creates greater customer value with lower degradation.


About CTC

With respect to the certification of photovoltaic products, CTC has carried out the green solar photovoltaic product certification, green building photovoltaic product certification, photovoltaic materials “Top Runner” certification, CTC photovoltaic module conversion efficiency “Top Runner” certification, CTC photovoltaic module power degradation “Top Runner” certification and so on. Its tests and certification results have been accepted by a number of ministries and commissions of China.

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