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TCL Solar, the photovoltaic arm of Chinese company TCL, showcased its C2 back-contact module lineup at the Solar & Storage Expo Conference held in Vicenza, northern Italy, last week. The products made their initial appearance in Asia during early summer and can now be ordered in Europe, with the first shipments heading to the United Kingdom.
This release widens TCL Solar’s back-contact offerings, which had previously featured items sold under the TCL Solar and SunPower names. The C2 family addresses both residential and larger-scale uses.
The C2 module for homes incorporates 108 back-contact cells and is offered in 480 W and 485 W variants, delivering efficiencies of 23.6% and 23.8% respectively. Its dimensions are 1,800 mm by 1,134 mm by 30 mm, and it weighs 24.7 kg.
The C2 M comes in six power classes spanning 645 W to 670 W, rising in 5 W steps. Efficiency ranges from 23.9% at 645 W up to 24.8% at 670 W. This n-type bifacial, double-glass module employs 132 G12R back-contact cells, measures 2,382 mm by 1,134 mm by 30 mm and weighs 32.5 kg.
Power bifaciality for the C2 M stands at roughly 75%. TCL Solar specifies bifaciality coefficients of 80% for maximum power, 100% for open-circuit voltage and 80% for short-circuit current.
Both formats feature 2.0 mm heat-strengthened, anti-reflective coated front glass alongside 2.0 mm heat-strengthened rear glass, an anodized aluminum-alloy frame and an IP68 junction box containing three diodes. Maximum static load ratings are 5,400 Pa for the front and 2,400 Pa for the rear.
Operating temperatures for both products span -40 C to 70 C, with a maximum system voltage of 1,500 V DC. The maximum-power temperature coefficient is -0.26% per degree Celsius. Each carries Class II electrical protection and a Class C fire rating.
For the residential module, TCL Solar provides a 25-year product warranty plus 30-year linear power coverage; the C2 M comes with a 15-year product warranty and 30-year linear performance warranty. Both guarantee a minimum output of 99% after year one and cap annual degradation at 0.35%, yielding 88.85% warranted output at the 30-year mark.
Packaging for the residential module is 36 units per pallet and 936 units per 40-foot high-cube container, whereas the C2 M is packed at 36 units per pallet and 720 units per container.
TCL Solar stated the C2 series can be purchased via authorized distributors throughout Europe. Pricing remains undisclosed.
The new range has clear forerunners within TCL’s own catalog. TCL Solar’s E Class residential back-contact module, released in late 2025, achieved 475 W and 23.8% efficiency. The new C2 S Black lifts that to 495 W and 24.3% while adopting a gapless design. The progression is more pronounced for the large module: the earlier E Class HSM-BD66-GR family topped out at 665 W and 24.6%. The C2 L keeps the HSM-BD66-GR model family but raises the top rating to 670 W and 24.8%, while cutting listed module weight from 33.5 kg to 32.5 kg.
This launch coincides with TCL’s efforts to grow its back-contact manufacturing capacity. In July, pv magazine reported that TCL Zhonghuan, another part of TCL’s solar business, had finished acquiring DAS Solar and set out plans to convert 20 GW of solar cell capacity and 25 GW of module capacity to back-contact production.
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