Sunpal's PERC solar cell technology improves the efficiency of solar cells by adding a passivation layer on the back of the cell that helps to minimize recombination losses and increase light absorption. It is popular for its relatively low cost and compatibility with existing manufacturing processes.

TOPCon cell technology is a further development of PERC. The higher bifaciality rate is up to 23.4%, which means that more power can be generated from both sides of the solar cells. The lower degradation ensures a longer service life, while the lower temperature sensitivity maintains efficiency in high-temperature conditions.

HJT cell technology is a combination of crystalline silicon and amorphous thin-film silicon. It can utilise more energy than either technology could achieve on its own. The bifacial modules can achieve impressive efficiencies of over 23.2%, making them an increasingly attractive option for solar power generation.

The market for bifacial modules is growing rapidly as the module is designed to capture sunlight from both sides of the module, increasing the capacity of solar power generation. The more efficient cell structures, longer durability and longevity of bifacial modules have led to lower system costs.