Tongwei Solar Launched New High-Efficiency Module
The company introduced a 48-cell residential solar module designed to maximize power output on limited rooftop space.
Updated on Oct. 13, 2026 in Energy
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Tongwei Solar has released the TNC 2.0 FULLX G12R-48 residential solar module, which offers a power output of up to 490 watts. The new module features a compact, dual-glass design that reaches 24.5 percent efficiency.
Why it matters
This module addresses the challenge of limited residential rooftop space by increasing power output density per unit. The design specifically improves energy harvesting during low-light conditions found in early morning and late afternoon hours.
The module utilizes a zero-cell-gap layout within a 1,762 by 1,134 by 30 millimeter frame to achieve 24.5 percent efficiency. Testing conducted in Yancheng yielded 447.56 equivalent full-load hours, demonstrating superior output compared to standard TOPCon modules.
The players
Tongwei Solar
Tongwei Solar is a major Chinese manufacturer specializing in the production of high-efficiency solar photovoltaic modules and polysilicon materials.
The details
Available in Full Black and Black Frame versions, the module uses concealed current-collection features to provide a uniform visual appearance. The construction incorporates dual-glass panels to reduce leakage current and improve durability compared to copper-plated back-contact alternatives.
Timeline
October 13, 2026: Tongwei Solar introduced the TNC 2.0 FULLX G12R-48 module.
The Big Picture
This release continues the industry-wide push toward higher-density cell configurations to improve rooftop solar economics. The move marks a technical advancement over standard TOPCon solar module technology by optimizing low-light energy capture.
Homeowners with limited roof surface area may see increased energy yields, potentially reducing the number of panels required for a system. The optimized design could also lead to long-term cost savings, with a 12-module system estimated to save more than 400 euros.
The takeaway
This new module demonstrates how manufacturers are prioritizing high-efficiency layouts to overcome spatial constraints on residential properties. Consumers should consider how improved low-light performance might impact energy production across different geographic climates.
Further reading
Learn more about the latest innovations in Energy.
Source note: This article includes information reported by Adnkronos.
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