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Introduction to Sonnex TBC Solar Panels: Another Leap in High Efficiency Photovoltaic Technology

                             June 12, 2025

Sonnex Energie is proud to launch our next generation TBC back-contact solar panels, which are expected to start on the market in the third quarter of 2025. Designed for peak performance and long-term reliability, these new modules combine the advantages of TOPCon (tunnel oxide passivation contact) and IBC (interleaved back contact) battery technology to achieve module efficiency up to 24%, ranking among the top in today’s industry.

What is TBC?

TBC stands for Tunnel Back Contact Technology, an innovative battery design that perfectly blends TOPCon’s advanced passivation technology with the aesthetic and performance advantages of the back contact structure. This hybrid technology eliminates front metal shading, enhances light absorption and maximizes electrical performance.

Product Highlights

Residential Solutions: 480W / 485W

• Panel size: ~2.0 m²

• Design: Smooth all-black look that integrates seamlessly with the roof

• Efficiency: up to 24%

• Ideal for: High-end roof installation, requiring high output power per square meter and a modern aesthetic

C&I (Commercial and Industrial) Solutions: Up to 650W

• Panel size: 2382 x 1134 mm

• Efficiency: Industry-leading power output with minimal system footprint

• Suitable for: Floor mounting systems, commercial roofs and large industrial arrays that pursue top-notch performance and reliability.

Why choose the Sonnex TBC panel?

• Maximum efficiency rating: Combined with TOPCon’s high carrier selectivity and IBC’s zero front shading, these modules have a module efficiency of up to 24%, maximizing energy output for all types of roof or ground systems.

• Extended Performance and Warranty: A 30-year product and performance warranty is provided to ensure long-term stability and customer confidence.

• Optimized aesthetics: all black, unified appearance without front busbars - perfect for residential and visible commercial projects.

• German quality, global standards: designed and tested according to Sonnex's strict quality control protocols to ensure durability, performance consistency and lasting value.

Moving towards the future of solar energy

Sonnex TBC solar panels highlight our commitment to innovative, efficient and sustainable energy solutions. Whether you are a homeowner looking to maximize roof space or a business partner looking for high-yield components for industrial and commercial applications, our new TBC range delivers exceptional results in a wide range of applications.

Booking is now open. Full listing time: third quarter of 2025.

Sonnex TBC combines technology with performance to keep you ahead of the curve.