HO CHI MINH CITY, Vietnam, Sept. 9, 2026 /PRNewswire/ -- Trinasolar, a global leader in smart PV and energy storage solutions, has been selected to supply its Vertex N 730–735W n-type i-TOPCon modules for the 450MWac and 562MWdc Dầu Tiếng 5 Floating Solar and Storage Project in Tây Ninh Province, Vietnam.
Developed by DT5.1 Energy JSC, a member of Xuan Cau Holdings, Dầu Tiếng 5 broke ground on 4 August 2026 and is scheduled to begin commercial operation in December 2027. The project is expected to generate approximately 808GWh of clean electricity annually for Vietnam's national power system.
Dầu Tiếng 5 also builds on Trinasolar's experience in floating solar in Vietnam. In 2020, Trinasolar supplied 210 Vertex bifacial modules for the 50.6MW Dầm Trà Ổ floating solar project in Bình Định Province. The latest Dầu Tiếng 5 project extends that experience to a significantly larger utility-scale development using Trinasolar's n-type i-TOPCon Vertex N technology.
Located in a semi-submerged area of Dầu Tiếng Lake, Dầu Tiếng 5 combines a 562MWdc floating solar array with a humid, water-based operating environment. For this application, Trinasolar's Vertex N (NEG21C.20) modules provide high power output of 730–735W and a low-voltage design that supports higher string power, helping reduce module count and optimise balance-of-system requirements across the floating solar array. Its bifacial dual-glass design, with bifaciality of 80±5%, enables additional rear-side generation where irradiance reaches the back of the module, supporting higher energy yield from the available project area. The dual-glass construction and independently verified resistance to potential-induced degradation further support long-term reliability under the project's operating conditions.
"This is one of the first projects to implement the Direct Power Purchase Agreement (DPPA) mechanism. This project brings to life a long-awaited regulatory framework. The mechanism fosters sustainable growth for both power generators and large-scale electricity consumers, while contributing significantly to the development of a competitive electricity market" said the owner representative of DT5.1 Energy JSC.
"Dầu Tiếng 5 reflects the growing scale and ambition of Vietnam's solar market," said Elva Wang, Group Director of South, Southeast and Central Asia, Trinasolar Asia Pacific. "Trinasolar has supported floating solar in Vietnam since the Dầm Trà Ổ project in 2020 and has since built further experience across major floating solar projects in Singapore, Malaysia and Thailand. Dầu Tiếng 5 brings that experience to a much larger utility-scale development and reflects the level of supply and project support we can bring to Vietnam as the market continues to grow."
Dầu Tiếng 5 also highlights the potential for floating solar to support Vietnam's renewable energy expansion by making use of suitable water and semi-submerged areas for large-scale clean energy generation. Through projects such as Dầu Tiếng 5, Trinasolar is bringing its utility-scale floating solar experience to support the development of this emerging application in Vietnam.
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Trinasolar Vertex N Modules Selected for 562MWdc Dầu Tiếng 5 Floating Solar Project in Vietnam
