INFORMATION about SOLAR PANELS
Currently (2025), the most efficient solar modules on the market are typically monocrystalline modules based on advanced N-type cell technologies, such as TOPCon, HJT (heterojunction), and ABC (all back contact). These technologies enable efficiencies of over 24%.
Technologies that contribute to high efficiencies:
* N-type cells: Unlike traditional P-type cells, N-type cells are less susceptible to degradation and often offer higher efficiencies.
* TOPCon (Tunnel Oxide Passivated Contact): A widely used and efficient N-type technology that offers good performance under real-world conditions.
* HJT (Heterojunction Technology): Combines amorphous and crystalline silicon, resulting in high efficiencies and good performance at high temperatures.
* ABC (All Back Contact): With this technology, all contacts are located on the back of the cell, allowing the front side to be fully utilized for light absorption, increasing efficiency and also enabling a more aesthetically pleasing, "full black" design.
* Bifacial modules: These modules can also absorb light on the back and convert it into electricity, which can significantly increase energy yield, especially on reflective surfaces.
Here are some of the top performers and important aspects:
Modules with the highest efficiency (as of 2025):
* Aiko Solar Neostar (various models): These modules are often cited as leaders, with efficiencies of up to 24.8% (e.g., Neostar 3N54). They use ABC technology
* LONGi Hi-MO X10 Scientist / Hi-MO 9: LONGi also achieves very high efficiencies, with models like the Hi-MO X10 Scientist (up to 24.8%). LONGi has also set records for silicon solar cell efficiency (up to 27.81% under laboratory conditions).
* JinkoSolar Tiger Neo 3.0: With an efficiency of 24.8%, this is also a leading module that uses N-type TOPCon technology.
* SunPower Maxeon 7: Known for its high efficiency and longevity, the Maxeon 7 achieves up to 24.1% efficiency. These modules use back-contact (IBC) technology.
* Luxor Eco Line HJT / M108: Luxor offers modules with efficiencies around 23.89%, often bifacial.
* Astronergy CHSM54RNs(DG)/F-BH: Achieves efficiencies of around 23.3%.
* Trina Solar Vertex N / Vertex S+: Trina Solar is another leading manufacturer with modules that achieve efficiencies of 22.8% to 23.3% and more.
* Canadian Solar TOPHiKu6: Achieves efficiencies of around 23.5%.
What to consider when choosing:
* Efficiency vs. Nominal Power: Efficiency is the percentage of sunlight that is converted into electricity. The nominal power (in watts peak, Wp) indicates the maximum output of a module under standard test conditions. Higher efficiencies are especially important when available roof space is limited.
* Temperature Coefficient: Indicates how much the module's output decreases as temperatures rise. Modules with a lower temperature coefficient are advantageous in warmer climates or on roofs without optimal ventilation.
* Degradation: The annual decrease in the module's output over time. Modern modules have very low degradation.
* Warranties: Pay attention to product and performance warranties. Premium modules often offer 25 to 30-year performance warranties.
* Value for money: The "most effective" modules are not always the most economical. It's important to find a balance between efficiency, cost, and the specific needs of your system.
For most homeowners, TOPCon and HJT modules currently offer the best overall package in terms of price, efficiency, and lifetime. If the focus is on maximum performance and state-of-the-art design, ABC modules are an excellent choice.