Solar PV materials, cell and module maker Jolywood’s new materials R&D team, in collaboration with Sichuan University, has published a research paper in the solar energy journal Solar Energy. Titled The Aging Behavior and Service Time Estimation of Photovoltaic Backsheets Based on Artificially Accelerated Aging and Outdoor Aging, this study investigates the aging behavior of solar photovoltaic (PV) module backsheets under environmental stress and proposes a reliable lifetime estimation model.
The research focuses on fluorocarbon-coated PV backsheets (CPC backsheets), conducting physical and chemical degradation tests under both multi-factor-accelerated aging conditions indoors and outdoor exposure. A reaction-controlled kinetics model based on the reduction of elongation at break is proposed to quantify mechanical performance degradation, with its accuracy validated through accelerated aging experimental data.
Using this model, the study evaluates the lifespan of CPC backsheets under different climatic conditions, reveals their aging mechanisms, and provides a simple yet reliable method for lifetime prediction based on limited data. Jolywood states that this research is of great significance for optimizing PV backsheet material selection and service life prediction, ultimately enhancing the long-term stability and safety of PV modules.
In January, Jolywood forecast a net loss for FY2024 as part of its annual performance forecast (see China Solar PV News Snippets).
Chinese chemical enterprise Junzheng Group has signed a strategic cooperation framework agreement for the Alxa Wind-Solar Hydrogen Production and Green Energy Integration Project. According to the agreement, Junzheng Group plans to invest RMB 19.36 billion ($2.67 billion) in Alxa League, Inner Mongolia, to develop an integrated wind-solar hydrogen production and green energy project.
To be implemented in 2 phases, the project will include the construction of a 4.03 GW wind-solar power generation project, a 1.5 billion Nm³/year water electrolysis hydrogen production facility, a 300,000-ton/year green methanol plant, and a 600,000-ton/year green ammonia production facility, alongside traditional industry green substitution projects.
Solar inverter supplier Sungrow has announced that it has ranked No.1 on BloombergNEF’s 2024 PV Module and Inverter Bankability Survey for a 5th time. Sungrow says it is the only inverter supplier to receive the top global rating, reinforcing its strong financial credibility and making its inverters a preferred choice for solar project financing. Additionally, Sungrow secured the top position in BloombergNEF’s 2024 energy storage bankability rankings for both energy storage systems (ESS) and power conversion systems (PCS).
Last month, Sungrow was awarded the Gold Medal Certification in the EcoVadis Sustainability Rating (see China Solar PV News Snippets).
Shanghai Electric subsidiary Hency Solar has signed an agreement with Pengzhi Power to supply 600 MW of its Pioneer 2.0 series "SEP3-132D-620YS" high-efficiency N-type solar modules to the latter. Calling it the largest PV module order since its inception, Hency Solar says that this contract also furthers its cooperation with Pengzhi Power. The projects, located across Jiangsu Province, are said to possess ‘strong grid access and absorption capabilities.’ Some of the notable projects include JD Logistics Park distributed PV projects and utility-scale PV projects in Nanjing, Xuzhou, Suqian and Lianyungang.
The Pioneer 2.0 series module is based on super multibusbar (SMBB) half-cell technology, featuring better temperature coefficient, higher reliability and lower LID.
PV manufacturer Jinergy’s parent Jinneng Holding has announced winners of its centralized solar module procurement for the Jinbei Coal Mining Subsidence New Energy Base. The 6 GW procurement required bifacial dual-glass TOPCon modules in the 182 mm to 210 mm range, and a minimum module conversion efficiency of 22.75%. The top 3 winning bidders and their bid prices are as follows:
Jinergy – RMB 0.72/W ($0.0991/W)
Lu’an Solar – RMB 0.721/W ($0.0993/W)
JinkoSolar – RMB 0.705/W ($0.0971/W)
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