The Chinese manufacturer unveiled its fourth-generation G4 Infinite Ultra all-back-contact (ABC) module at SNEC 2026 in Shanghai, pushing its platform into the 690 W power class while reaching up to 26% peak module efficiency and 25.6% efficiency in mass production.
Chinese PV module maker Aiko has introduced its fourth-generation G4 Infinite Ultra module at SNEC 2026 in Shanghai, extending its all-back-contact (ABC) module platform into the 690 W power class.
The company said the new product, also marketed internationally as the Infinite Ultra Series, builds on its previous Infinite ABC module design. Aiko reported a peak module efficiency of 26% and a mass-production output of up to 690 W at 25.6% efficiency.
The module is based on Aiko’s n-type ABC cell technology, which places all electrical contacts on the rear side, leaving the front surface free of metal gridlines. The architecture is intended to increase light absorption and improve aesthetics, particularly for rooftop and distributed PV applications.
According to the company, the G4 platform retains key module features from earlier generations, including hidden busbars, zero cell spacing and zero-busbar (0BB) technology. Power output has been increased within the same standard module footprint through improvements at both cell and module level, the manufacturer said.
