First Larger Wafer Based HJT Modules

HJT, Though Known For Its High Efficiency, The Technology Is Also Wafer Size Sensitive When It Comes To Power Rating 
11:15 PM (Beijing Time) - 05. March 2021

As shown in our TaiyangNews Heterojunction Solar Technology report, the module power is simply the function of the cell size. With Jinergy being currently the only one offering HJT modules based on M6 cells, its products have the highest power rating among commercially available HJT panels. (source: TaiyangNews)

Key Takeaways

  • HJT makers have just started to scale up the manufacturing to larger wafer sizes
  • Jinergy implemented the process on M6 with power rating of 465 W, while majority of commercially available modules were based on M2 size
  • Risen very recently launched a HJT module with above 600W power

Even with all the proven claims of higher efficiency, HJT module products are yet to gather steam in terms of power vis-à-vis PERC modules. Being the mainstream technology, PERC has been successfully scaled up and implemented in larger wafer sizes such as 182 mm and 210 mm, while HJT manufacturing lines have only now started to scale up to M6. Among the commercially available modules, only Jinergy is offering products based on M6 wafers and, naturally, are the most powerful. The company is offering half-cell and MBB modules with a rated power of 465 W in 72-cell (eq.) configuration and 390 W in 60-cell (eq.). However, this may not hold long as Risen recently announced the launch of a HJT module with more than 600 W that is based on G12 size.

REC comes next in the pecking order with M4-size wafers, lending some credence to the ‘size does matter’ cliché. As for the module technology, being one of the key developers of half-cell technology, REC naturally borrowed this approach to its premium HJT products, using SWCT for interconnection. The 120 and 144 cell modules are rated at 380 W and 450 W, respectively.

Suntech is offering one module based on G1 cell size (158.75 mm). This 72-cell module has a labeled wattage of 435 W, which is also the same as Risen’s module. Suntech is not producing HJT cells but sourcing them externally. However, Risen is also offering the same half-cut MBB module in a 60-cell layout with a rated power of 355 W. Except for Panasonic, which is still offering modules based on 5-inch cell with 3-busbars, all are employing MBB for interconnection

While the above listed information was taken from our Dec. 2020 released Heterojunction Solar Technology Report, in February, Panasonic said it will abandon solar cell/module production in 2022 (see Panasonic Exiting Solar PV Production Business). In March,  Risen Energy announced a new record module in size and power – the HJT panel based on 210mm wafers reaches up to 606.7 W (see Risen Energy’s HJT Solar Modules Exceed 600W Output).

Our TaiyangNews report on Heterojunction Solar Technology 2020 can be downloaded for free here.



Shravan Chunduri

Shravan Chunduri is Head of Technology at TaiyangNews.

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Shravan Chunduri