Tongwei Solar Launched 490W Residential Solar Module
The TNC 2.0 FULLX module targets space-constrained rooftops with a 24.5 percent efficiency rating.
Updated on Oct. 13, 2026 in Energy
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Tongwei Solar has introduced its TNC 2.0 FULLX G12R-48 residential solar module, a dual-glass, 48-cell panel. The module, which is available in Full Black and Black Frame versions, delivers a power output of up to 490 watts.
Why it matters
The design prioritizes increased power density to address the physical limitations of residential rooftop installations. By improving low-light energy capture, the technology aims to extend solar generation capacity during early morning and late afternoon hours.
The module achieves a 30-watt increase over conventional TOPCon models and a 3.3 percent energy generation improvement against BC (back-contact) modules. These figures are based on testing conducted in Yancheng, China.
The players
Tongwei Solar
A major Chinese manufacturer specializing in high-efficiency photovoltaic cells, modules, and polysilicon production for global energy markets.
The details
The module utilizes a zero-cell-gap layout—a technique that eliminates the space between solar cells to increase the active light-absorbing surface area. This construction features dual-glass panels and concealed current-collection features that maintain a uniform aesthetic while reducing leakage current. These architectural changes allow the module to maintain higher energy production under the diffuse light conditions typical of early and late hours.
Timeline
October 13, 2026: Tongwei Solar introduced the TNC 2.0 FULLX G12R-48 module.
The Tech Race
The release sits within an ongoing industry shift toward higher-efficiency residential modules to overcome space constraints. By benchmarking against existing TOPCon and BC modules, Tongwei aims to capture market share in the high-density residential segment.
Homeowners with limited roof space may benefit from the higher power output, which is projected to potentially save up to 400 euros in module costs for a 12-unit system. These modules are intended for residential installations where maximizing power per square meter is a priority.
The takeaway
The move reflects a design pivot toward high-efficiency residential systems that prioritize performance during non-peak solar hours. Watch for future cost-per-watt data as the modules move into broad residential distribution.
Further reading
For broader analysis on industry hardware trends, visit Energy.
Source note: This article includes information reported by Adnkronos.
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