On March 9, Tongwei showcased its TNC 3.0 high-power module at the 21st China (Jinan) International Photovoltaic & Energy Storage Conference 2026. With the value proposition of "Higher Quality, More Power Generation", it provides the distributed market with photovoltaic solutions featuring higher power generation income, better LCOE and stronger reliability.

The Edge of Tongwei TNC 3.0 Comes from Decades of Focus and Ultimate Intelligent Manufacturing

Since 2016, Tongwei has set up a dedicated team for multi-busbar module R&D, and took the lead in realizing large-scale mass production and supply of multi-busbar cells and modules, with cumulative shipments exceeding 10 GW. Tongwei also owns the industry’s only photovoltaic cell "Lighthouse Factory", capable of stably mass-producing TNC cells with conversion efficiency over 26.3%.Based on profound accumulation and top-tier manufacturing capabilities, TNC 3.0 is a "next-generation optimal solution" redesigned from cell to module structure. It not only reduces circuit losses but also enhances application reliability for end-users. Together, these advantages ensure TNC 3.0’s outstanding long‑term power generation performance.

Facing the new market normal under electricity spot trading, Tongwei brought the laboratory to the exhibition booth. Through a series of targeted comparative experiments, it demonstrated to on-site customers how TNC 3.0 secures distributed asset safety with the investment logic of Low Loss, Fast Response, High Efficiency, Stable Output.

Detailed Breakdown of Three Core Technical Models

The TNC 3.0 module divides each cell into four parts. The four-way cell design reduces the operating current per cell, enabling more and smoother current paths inside the module.With lower current, internal power loss is significantly reduced. Compared with conventional TOPCon half-cell modules, internal thermal loss can be reduced by approximately 75%. This allows more solar energy to be converted into electricity, achieving both efficiency improvement and loss reduction.It notably enhances the photoelectric conversion efficiency and ensures more stable power generation performance of the power station during long-term operation.In terms of actual revenue, each 10,000 square meters of rooftop can generate additional power revenue of up to 241,000 yuan within 12 years.With its core advantages of high quality and higher power generation, it provides robust asset return support for distributed investments in the spot trading era.

Verifying Higher Power Generation Through Experiments

At the exhibition site, the anti-shading test of multi-cell modules and the leakage current comparison model of modules under low-light conditions simulated real application scenarios, further confirming the multi-scenario power generation capability of TNC 3.0.

Under low light of 200W/m², the TNC module can achieve a 2.71% higher performance than BC modules.According to data from the Yinchuan CPVT Verification Base, the TNC 3.0 module can generate 1.8% more electricity per day.

For power stations, superior low-light gain and anti-shading performance mean capturing more revenue during high electricity price periods in the morning and evening, maintaining stable output even in complex environments, and maximizing long-term asset value gains.

Higher Fire Resistance & Greater Reliability

Fire is the Sword of Damocles hanging over power stations.Once a fire occurs, it can cause asset damage at the least, and even tragedies in severe cases.

As Italy’s new photovoltaic fire protection regulations are officially aligned with the EU’s dual standards EN13501-1 and EN13501-5, the industry is facing stringent assessments of the fire performance of modules and rooftop systems.

At the exhibition site, Xu Hailiang, Vice President of Smart Energy at TÜV SÜD, awarded Italy’s new fire protection certification to Tongwei Co., Ltd.’s TNC series photovoltaic modules.Sun Zhiyang, Head of Distributed Module Sales at the Photovoltaic Commercial Department of Tongwei Co., Ltd., accepted the certificate on behalf of the company.Relying on profound technical accumulation, Tongwei took the lead in passing this authoritative certification.

Partner Testimonials: The Trusted Choice

At the exhibition site, Xu Kaiyu, Deputy General Manager of Shandong Changmai New Energy Co., Ltd., shared the cooperation experience with Tongwei.

He stated that choosing Tongwei means choosing greater reliability.Tongwei not only has solid corporate heritage and product strength, but also demonstrates extremely high professionalism in delivery efficiency and after-sales support.

Such comprehensive service support not only ensures the stable operation of projects, but also gives partners full confidence and assurance in deeply developing the distributed market.

ooking ahead, Tongwei will adhere to innovation-driven and quality-leading development, focus on the core product value of "high quality and higher power generation",continuously iterate products and services, deepen open cooperation, and empower the high-quality development of distributed photovoltaics.