Chinese clean energy firm and PV manufacturer, Jinergy (or ‘Jinneng Clean Energy Technology Co. Ltd.’), has been around since 2013 and is already making waves in the clean energy sector. Headquartered in Shanxi Province, China, Jinergy is renowned for their cutting-edge technology. With polycrystalline, Passivated Emitter and Rear Cell (PERC) monocrystalline and HJT panels among their catalogue, the company is one of the leading PV cell and module manufacturers around the world.
The company recently provided 6MW solar panels for Australia’s first utility-sized solar farm, located in Whyalla, South Australia, which no doubt, is a big vote of confidence in the firm from the South Australian government.
MC Electrical was recently asked by Jinergy to test their new 310w HJT bi-facial panel. Unlike your standard solar panels, which are glass-fronted and backed by a plastic sheet, these innovative PV panels are encased in glass, both front and back. Furthermore, the cells within the solar panel are bi-facial. This means that they can absorb light from both the front and the rear of the panel. Depending on the way these panels are positioned on the roof, they can absorb the sunlight being reflected by the roof which hits the underside of the panel, as well as that which comes through the small gaps between the cells. Because the cells are encased in glass, the dead area between cells allows sunlight to filter through and be captured by the underside panels.
Of course, double-glass frames are heavier and more expensive than the standard aluminium frames and plastic backing that you see in traditional solar panels. However, the frameless, double-glass Jinergy panels avoid the dreaded PID (or ‘potential induced degradation’) faced by aluminium frames.
Jinergy isn’t the first to make use of heterojunction technology (with etching on both sides of the solar cell), however, they’re certainly promising impressive results. Their 310w panel is purported to achieve as much as 340 – 370w, or 10 – 20% higher production, when properly positioned (on a reflective commercial rooftop, for example) to capture sunlight from both above and below the panel. Of course, we’ve got to test this for ourselves to be sure the claims are true. We’ll be installing and testing 8 of the Jinergy panels on our warehouse roof and comparing them to 8 of Sunpower’s 345w panels. We’ve chosen to compare with Sunpower as they’re the best panels in the world. If Jinergy’s claims are true, the panels should perform similarly to the Sunpower panels. But only time will tell. We’ll keep you updated as the results come in!