16-12 2025
What are the future development prospects of UHVDC transmission projects?
As one of the most advanced transmission technologies globally, the UHVDC transmission project holds extremely broad development prospects in the future. The following is a detailed analysis:
Policy support continues to intensify: Accelerating the construction of a new power system is a major measure to implement the decisions and deployments of the CPC Central Committee and promote the clean and low-carbon transformation of energy. The National Development and Reform Commission, the National Energy Administration, and other departments are strengthening overall planning to provide policy guidance for the construction of ultra-high-voltage direct current transmission projects. During the "14th Five-Year Plan" period, the State Grid plans to put 15 ultra-high-voltage direct current projects into operation to meet the needs of large-scale and efficient allocation of new energy, ensuring an average annual grid connection and efficient consumption of no less than 200 million kilowatts of new energy.
Market demand is continuously growing: The uneven distribution of global energy resources and electricity load is a common issue. For instance, China's western and northern regions are rich in energy, while the eastern and southern regions face energy shortages. Ultra-high voltage direct current (UHVDC) transmission can achieve long-distance and large-capacity power transmission, transporting low-cost energy from the western and northern regions to the eastern load centers, optimizing energy allocation. Therefore, market demand for it continues to rise. Furthermore, clean energy sources such as wind and solar power are intermittent and fluctuating, with limited local consumption capacity. UHVDC transmission projects can transport this energy to the central and eastern regions, solving the dilemma of "having excess energy generated but not being used". As the installed capacity of clean energy continues to increase globally, the demand for UHVDC transmission will also increase accordingly.
Technological innovation drives development: In the future, traditional UHV DC transmission technology will continue to make steady progress, with ±800kV DC and 1000kV AC technologies remaining mature and reliable, and still serving as the main force for cross-regional power transmission. Meanwhile, flexible DC technology will experience explosive growth, as it can better adapt to scenarios such as offshore wind power and AI data centers, and its proportion in new UHV projects will continue to increase. Furthermore, digital twin technology will achieve full coverage, with intelligent monitoring, online diagnosis, and other features becoming standard configurations, effectively reducing operation and maintenance costs and enhancing the reliability and efficiency of engineering operations.
The industrial development holds vast prospects: Looking at the domestic market, core equipment for UHVDC transmission projects, such as converter valves and UHV transformers, are in short supply, with leading enterprises enjoying abundant orders. Related industries upstream in the supply chain, including copper, aluminum, and insulation materials, will also benefit accordingly. In the international market, China's UHV core equipment boasts a high global market share, lower equipment costs compared to Europe and the United States, and shorter delivery cycles. This makes it highly competitive in global UHV construction projects. As global UHV construction progresses, Chinese enterprises are expected to secure more overseas orders, further driving industrial development.
Helping to Address Climate Change: In the broader context of global efforts to tackle climate change, reducing carbon emissions and achieving carbon neutrality are crucial goals for all nations. Ultra-high voltage direct current (UHVDC) transmission projects can facilitate the large-scale consumption of clean energy, reduce the use of fossil fuels such as coal, and lower carbon emissions. For instance, the completion of each ±800kV UHVDC project can increase the annual consumption of clean energy by approximately 30-50 billion kWh, equivalent to reducing coal combustion by 10-15 million tons. This contributes to the achievement of global climate goals, and thus, the development of such projects will receive increased attention and support.
