Hard-pressed Asian solar manufacturers have switched from multi-layer polymer backsheets to a single layer of polyethylene terephthalate (PET), with a protective coating on both sides of their modules. Backsheet makers confirm these products, known as “CPC,” are now mainstream. There is little evidence to demonstrate that they can withstand 30 years-plus of outdoor use, however.

The solar industry has dragged its heels on the issue of silver-dependence for cell metallization, but China’s Jiangsu Xianghuan Technology (JXTC) is moving into commercial production with a copper plating process that overcomes many of the challenges that have limited interest from cell manufacturers.

US-based Origami Solar has overcome two key challenges to replace aluminum solar module frames with steel products. The company says it can offer improved performance and a compelling value proposition, particularly for module makers setting up outside China. pv magazine caught up with Origami Solar CEO Gregg Patterson to discuss steel frames and the company’s expansion plans.

In five key trends, pv magazine looks back over a year that saw PV module prices fall lower than many thought possible, while demand was restrained by grid congestion, among other challenges. Energy storage has had a strong year and geopolitics is seeing solar and battery manufacturing enter new regions as competition drives technical innovation.

Discussions at the Sustainable Solar Europe event, held yesterday in Brussels, reveal that clearly recorded and available information is the key to ensuring sustainable and ethical practices all along the solar supply chain. And clear standards for the accuracy and relevance of this information are needed to ensure that all are moving toward the same target. The day also saw the launch of such a standard in the Solar Stewardship Initiative’s Supply Chain Traceability Standard.

Laboratory testing has revealed that some negatively-doped, “n-type” tunnel oxide passivated contact (TOPCon) and heterojunction (HJT) solar modules are susceptible to ultraviolet (UV) light-related damage and degradation. That could mean trouble down the line, if modules in the field begin to show UV-related performance loss. Manufacturers are implementing solutions at cell and module level.

The 41st European Photovoltaic Solar Energy Conference (EU PVSEC) will draw to a close in Vienna this afternoon. Discussions at this year’s event leave little doubt that solar installations will continue to see impressive growth over the coming years. All week there has been plenty of optimism around new policy and technical innovations driving more solar into both electricity grids and urban and rural environments. For Europe, however, the lack of any meaningful capacity for manufacturing these promising technologies locally, puts something of a dampener on things.

European industry association PV Cycle estimates a 10 MW solar site will eventually produce 700 tons of waste material. It is becoming increasingly clear that PV modules need end-of-life protocols – for the technology and material processing, and the regulatory environment.

Renewable Energy Expo India (REI) returns to Greater Noida at the start of October, for what will be its 17th edition. For the second year running, The Battery Show India will run concurrently with REI. pv magazine had the chance to catch up with Julian Thomas, Senior Project Director at show organizer Informa Markets, to discuss why electric vehicles and energy storage are now the key to India’s energy transition.

The practical matter of taking a dead PV system apart and moving its components to their next destination has received less attention than recycling and second-life applications. In the United States, Decom Solar is offering decommissioning for commercial and industrial (C&I) solar projects. pv magazine spoke to Decom Solar co-founder Stephen Burns for an update.