GCL System Integration’s (GCL SI) presentation focused mainly on its latest BC technology – GPC 3.0 Tech – and on its product showcase at Intersolar Europe and SNEC Shanghai. The technology platform features advancements across the entire value chain.

（Leveraging vertically integrated PV manufacturing, GCL SI banks on its FBR silicon for BC cells, featuring a multilayer dielectric film and facilitating 0BB interconnection for the GPC 3.0 module range. ）

At the silicon level, GPC 3.0 Tech is based on the company’s proprietary FBR silicon, which has a low carbon footprint and full supply chain traceability. The difference at the wafer level is that it uses half-cut wafers rather than processing full cells and then cutting them into pieces at the module level. This completely reduces the edge losses. In terms of cell architecture, the cell design features multilayer dielectric films that enhance optical performance by improving light absorption. The company also optimized the laser patterning process to reduce damage. The cells also feature a fine-grid design and facilitate 0BB interconnection at the module level. All these advancements lead to a cell efficiency of 27.3%, according to Rojen Malachi, Technical Support Director, Europe, at GCL SI. He also presented the BC technology roadmap, indicating the technology would reach 28.9% cell efficiency by Q4 2028.

The main emphasis at the module level was a full-screen design with hidden rear busbars. This facilitates a larger active area, delivering more than 12 W of power gain. The module layout also features an overlap cell design complemented by a low process temperature, offering additional benefits such as reduced thermal shock and minimized wafer warping, thereby facilitating stable lamination. In addition to aesthetics, the company adopted a data-driven color-sorting process for BC cells, which ensures color consistency not just across a module but also among modules on a pallet.

GCL lists its current commercial product line under the SiRo brand name. It promotes the SiRo B fully black dual-glass module for residential use, offering a power output of 485-500 W. Its all-black aesthetic is enhanced by black mesh. The SiRo B Efficient, intended for C&I applications, features a white mesh and offers options for a metallic or black frame, with a power range of 490-505 W. These modules have been in mass production at GCL’s Chinese manufacturing plant for the past two months, which has an integrated cell and module capacity of up to 1.2 GW, according to Malachi. The utility-scale version is expected to be available by Q4.

Alongside the products showcased at these shows, GCL SI launched a new anti-glare variant of the SiRo series that has received AAA anti-glare certification from TÜV Rheinland. The company also exhibited its 4-terminal perovskite-silicon tandem modules, with BC bottom cells. The large-format modules, measuring 2.4 × 1.15 m, offer a power class of 655-720 W and an efficiency of close to 26%.