All Back Contact (ABC) has been used in the solar industry for several years. The principle is simple: all electrical contacts of the cell are placed on its rear side. This leaves the entire front surface free to capture light. Compared to standard modules with front-side contacts, this increases the active area and also improves aesthetics — panels appear as a uniform black surface.
The main advantages of ABC are not only seen in lab parameters but especially in long-term operation. This technology addresses the weaknesses of conventional modules and ensures higher and more stable electricity generation. What exactly sets AIKO’s ABC apart from other solutions on the market?
Higher efficiency
With a clear front surface free of shading wires, AIKO modules reach efficiencies above 25%. That means more energy from every square meter.
Stable performance in hot weather
ABC modules have a temperature coefficient as low as –0.26%/°C. During hot summer days they lose less power than standard modules, which translates into significantly higher yield over time.
Slower degradation
First-year power loss is below 1%, followed by around 0.35% annually. After 30 years of operation, the panel still retains more than 88% of its original capacity.
Higher yield under shading
The ABC design delivers more power even when part of the panel is shaded. In practice, this can mean up to one-third more output compared to modules based on TOPCon technology.
Microcrack resistance
A special interconnection method reduces the risk of mechanical damage. This means lower performance losses and fewer warranty claims.
Uniform appearance
The all-black design without visible wires creates a sleek look, attractive for residential customers as well as commercial projects where appearance plays a role.
Thanks to these characteristics, ABC technology is suitable both for residential rooftops, where space is limited, and for large commercial and industrial installations focused on long-term project economics.
For installers and investors, what matters is not only the datasheet but above all the impact on project economics. And this is where ABC delivers its strongest advantages:
Higher output per square meter allows better use of roof or ground space, crucial for residential systems where size is often limited.
Lower LCOE (Levelized Cost of Energy) shows that the cost of electricity generated by ABC is lower than that of standard TOPCon modules. Even a difference of a few percent can translate into significantly higher returns over decades.
Longer lifetime and stable performance reduce the risk of power loss and increase investment security.
Attractive design is often a decisive factor for residential customers who want solar panels to look elegant on their homes.
ABC technology proves that a change in cell design can have a profound impact on performance, reliability, and project economics. Full front-side utilization, improved thermal and shading behavior, slower degradation, and stronger mechanical reliability make ABC modules stand out clearly from conventional technologies.
The current third generation brings another step forward with features such as hidden busbars and overlap welding. These innovations show that ABC is constantly evolving, offering installers and investors panels that combine cutting-edge efficiency with long-term stability and a premium appearance.
