Global Power Generation Gains Comparison Map and Technical Analysis of Different Cell Technologies

With the rapid development of PV technology from p-type to n-type, the difference in power generation of different cell technology products are drawing more and more attention.

Nowadays the mainstream cell technologies are PERC, TOPCon and HJT. Each of them has its own advantages and disadvantages, but the comparative research on power generation is still lack of systematic whole-life cycle comparison based on the perspective of global application scenarios.

To this end, the core parameters of above mentioned three technologies are collected and the power generation of utility-scale power plants with these three different cell technology panels over a 25-year life cycle in 21 typical countries and regions with different climatic environments around the world are measured by Risen Energy Co., Ltd to create a comparison map of global power generation gains.

Globally, HJT technology products have higher power generation, which is 4.37%-6.54% higher than PERC and 1.25%-3.33% higher than TOPCon. and its power generation performance is more outstanding especially in high temperature regions (e.g. the Middle East, Australia and the southern US), with  6%+ gain compared to PERC and 3%+ gain compared to TOPCon.

In low temperature application scenarios, module power degradation is one of the main factors affecting the product's power generation; and in high temperature applications scenarios, the operating temperature is another major factor.

Due to the extremely stable temperature coefficient, higher bifacial factor and higher power retention of HJT modules, the power generation gain advantage of HJT is obvious in high temperature areas, and in low temperature areas, HJT also shows a relatively high power generation gain, which will bring higher power generation gain and more stable power yield to the PV system.