The sun over Johannesburg is never gentle. High temperatures, intense irradiation, and an often unstable grid environment—this land tests photovoltaic (PV) systems far more rigorously than laboratory conditions could ever replicate. Recently, Tongwei showcased its TNC 3.0 modules and TNC high-efficiency cells at Solar Storage Live Africa in Johannesburg, South Africa, where the company joined local partners in discussing project development and industry opportunities.

South Africa is one of Africa's most important energy markets, but it has long faced a structural crisis of tight power supply. Against this backdrop, the role of PV systems is undergoing a fundamental transformation—from a marginal auxiliary energy source in the past, it is gradually becoming a reliable core power source for businesses and projects.

TNC 3.0: Tailored Solution for South Africa

South Africa benefits from excellent irradiation conditions, but this comes at the cost of high temperatures. In the country's high-irradiation environment, module operating temperatures often exceed 45°C year-round, and can even surpass 60°C under extreme conditions. Module power output drops as temperatures rise, placing higher demands on power generation stability. Through optimization of cell structure and internal current path design, TNC 3.0 achieves an improved temperature coefficient of -0.26%/°C, allowing it to retain more output during the daily peak power generation period, rather than "discounting" performance when it matters most.

For industrial, commercial, and large-scale ground-mounted projects, power generation density per square meter directly impacts investment returns. The TNC 3.0 G12R-66 variant boasts a conversion efficiency exceeding 24.8% and a maximum power output of 670W. Compared to conventional modules, it generates more electricity, delivering higher energy yield per unit area under the same installation conditions. This efficiency gain not only benefits power generation—with the same installed capacity, less brackets, cables, inverters, and land are required, reducing balance of system (BOS) costs by approximately 2.55% and giving projects a more advantageous starting point from the outset.

Pictured: Tongwei's industrial and commercial project in Africa

High-Efficiency Modules Rooted in Tongwei's Cell Technology

The performance of TNC 3.0 modules stems from Tongwei's long-accumulated technical expertise and mass production capabilities in cell manufacturing. At the exhibition, Tongwei showcased the comprehensive capabilities of its TNC high-efficiency cell series in terms of high output, technical compatibility, and long-term returns. By highlighting key advantages such as module power gain, system cost optimization, and increased power generation revenue, the company further illustrated its overall value chain logic from product capability to value realization.

During the show, Ni Dongxia, Senior Engineer for Overseas Technical Support at the Quality Department of Tongwei Solar Platform, and Pan Gaoyuan, Senior Engineer, delivered on-site presentations on mass production capability and CTM (Cell-to-Module) optimization respectively, engaging with customers and partners on topics ranging from product portfolio and manufacturing foundations to value transfer logic across cells and modules.

Voices from the Southern Tip of Africa

Arctic sea ice is declining at a rate of approximately 13.1% per decade, continuously reshaping ecological boundaries. As the first Chinese private enterprise to join the World Wide Fund for Nature (WWF) Arctic conservation project and a PV company engaged in long-term deep collaboration on climate and energy issues, Tongwei invited local partners, customers, and visitors to write messages to the Arctic on postcards.

These handwritten postcards represent more than just expressions of concern—they symbolize hope for a green future, starting from the southern tip of Africa and resonating with the many ongoing changes taking place around the world.