ABC modules - Advanced solar technology for efficient energy generation

Photovoltaics is constantly evolving to achieve higher efficiency and better cost-effectiveness. ABC (All Back Contact) technology represents a significant advance by moving all electrical contacts to the back of the solar cell. This improves the energy yield and opens up new possibilities for sophisticated PV.

ABC modules explained: Functionality and structure of All Back Contact technology

ABC modules with All Back Contact technology are solar modules in which all electrical contacts are located entirely on the back of the cells. This eliminates the shading caused by front contacts, as is the case with conventional modules, which maximizes the active area and increases efficiency. The result is higher electricity yields with the same module surface area and an aesthetically pleasing, homogeneous appearance of the PV.

Technical features and advantages of ABC modules

The complete relocation of the electrical contacts to the rear of the modules significantly minimizes energy losses due to micro-shadowing and improves the light yield, especially in diffuse light. Compared to conventional PERC or TOPCon modules, ABC modules achieve a 6-10 % higher output. The robust cell architecture is specially designed for demanding climatic conditions and ensures stable energy generation.

*Source: Data extract AIKO Solar 2025

Performance with shading: ABC modules in comparison

The extent of shading on the module is impressively demonstrated in a simulated module test in which an AIKO ABC module was compared directly with a TOPCon module. Using partial shading, the test clearly shows that the performance of the AIKO ABC module remains consistently high, while the efficiency of the conventional module decreases significantly. This comparison underlines the superior shading tolerance of the AIKO ABC modules and their suitability for demanding installation conditions.

To see below - Video: Module test ABC technology vs. TOPCon technology with shading.

Further videos and experimental data from AIKO on the subject of shading can be found here.

Yield increase and economic efficiency using the example of AIKO ABC modules

AIKO ABC modules deliver up to 18.4 % more energy in the first year and up to 22.2 % more over 30 years than standard modules. This reduces the Levelized Cost of Electricity (LCOE) by up to 9.5 %, which significantly improves the economic efficiency of PV. These advantages are particularly relevant for commercial and private investors who are looking for long-term yield stability.**

**Source: Data extract AIKO Solar 2024

Durability, reliability and sustainability of ABC modules

Z. For example, AIKO ABC modules are equipped with tempered front glass and corrosion-resistant frames that can withstand mechanical stresses such as hail and wind and are extremely resistant to micro-cracking. High safety standards ensure operational safety and minimize maintenance costs. The long service life reduces replacement investments and lowers the CO2 footprint over the life cycle.

Conclusion: ABC modules - an efficient and future-proof solar solution

ABC technology sets new standards in efficiency, reliability and sustainability. With up to 10 %*** higher output compared to TOPCon modules, measured using an AIKO ABC module as an example, robust double glass and innovative cell architecture, it offers installers, construction companies and project planners a reliable and economical solution for sustainable solar projects. Compliance with international standards and TÜV certification underlines the quality and safety of the modules.

***Source: AIKO Solar 2025 data extract

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