Completion of 500/220kV Nho Quan - Phu Ly - Thuong Tin Transmission Line
At 11:35 AM on July 26, 2026, the National Power Transmission Corporation (EVNNPT) in coordination with the North Power Project Management Board (NPMB) and the National Power System Operation and Market Joint Stock Company (NSMO) successfully energized the entire 500/220kV Nho Quan - Phu Ly - Thuong Tin transmission line project. This event marks the completion of one of the key power transmission projects in the northern region, contributing significantly to ensuring national energy security.
Assessing the Project's Significance
The 500/220kV Nho Quan - Phu Ly - Thuong Tin transmission line is one of the key projects in the national power system development plan for the 2021-2030 period. The project holds important economic and social significance while playing a crucial role in ensuring energy security, enhancing connection capabilities, and power transmission between different regions.
The successful completion and operation of this transmission line will help resolve overload situations in key areas, improve the reliability of the power system, and create conditions for developing renewable energy sources in the northern region.
Detailed Project Information
| Technical Specifications of the 500/220kV Nho Quan - Phu Ly - Thuong Tin Transmission Line Project | |
|---|---|
| Project Name | 500/220kV Nho Quan - Phu Ly - Thuong Tin Transmission Line |
| Leading Unit | National Power Transmission Corporation (EVNNPT) |
| Project Management Unit | North Power Project Management Board (NPMB) |
| Operation Unit | National Power System Operation and Market Joint Stock Company (NSMO) |
| Total Length | 125 km |
| Number of Towers | 388 towers |
| Voltage Level | 500kV and 220kV |
| Total Investment | 3,500 billion VND |
| Construction Period | 24 months |
Implementation Process and Challenges
The 500/220kV Nho Quan - Phu Ly - Thuong Tin transmission line project commenced in July 2025 with a total investment of 3,500 billion VND. The implementation process faced numerous difficulties, particularly in land acquisition and adaptation to the complex weather conditions of the region.
According to Mr. Nguyen Van A, Director of the North Power Project Management Board: "We encountered many challenges during the project implementation, from adjusting designs to suit complex terrain to ensuring progress under adverse weather conditions. However, with the decisive leadership of EVNNPT's leadership and close coordination of related units, we completed the project on schedule."
Technology and Technical Solutions Applied
The project has applied many modern technologies and advanced technical solutions, including:
- Ultra-high voltage 500kV transmission system with advanced lightning protection technology
- Prefabricated steel tower system with excellent resistance to harsh weather conditions
- Remote monitoring system using IoT technology to track the operational status of the transmission line
- Modern protection and dispatch automation system
- Effective lightning protection and electromagnetic interference solutions
Impact on the Regional Power System
The completion and operation of the 500/220kV Nho Quan - Phu Ly - Thuong Tin transmission line will bring many practical benefits to the regional power system:
| Positive Impacts | Detailed Description |
|---|---|
| Increased Transmission Capacity | Increases transmission capacity by 1,200 MW, resolving overload situations in key areas |
| Enhanced Reliability | Reduces average power outage time and increases backup capability when failures occur |
| Regional Connectivity | |
| Renewable Energy Support |
Reactions and Assessments from Stakeholders
The completion of the project has received significant attention and positive evaluations from industry experts and leaders at various levels. Mr. Tran Van B, General Director of EVNNPT, emphasized: "Completing the 500/220kV Nho Quan - Phu Ly - Thuong Tin transmission line is an important achievement, demonstrating the capability and determination of the power industry in modernizing the national power transmission system. This is evidence of effective coordination among EVN's member units."
According to Ms. Le Thi C, an energy expert: "This project not only addresses the urgent need for power transmission in the northern region but is also an important step in building a smart, modern power system. The application of remote monitoring and automation technologies will improve operational efficiency and minimize the risk of failures."
Future Development Plans and Directions
Building on the success of the 500/220kV Nho Quan - Phu Ly - Thuong Tin transmission line project, EVNNPT and member units have outlined development plans for the northern region's power transmission system for the 2026-2030 period with the following key focuses:
- Investment in additional 500kV transmission lines connecting major power centers
- Modernization of substations and transmission equipment
- Widespread implementation of smart monitoring and operation technologies
- Investment in developing 220kV and 110kV systems to ensure power supply for rural, remote, and mountainous areas
- Development of transmission networks to connect renewable energy sources
Conclusion
The successful completion and commissioning of the 500/220kV Nho Quan - Phu Ly - Thuong Tin transmission line is an important milestone in the development of the national power system. The project not only addresses current power transmission needs but also creates a solid foundation for the socio-economic development of the northern region in the future.
This achievement affirms the capability and determination of Vietnam's power industry in modernizing the transmission system, ensuring national energy security, and contributing to the country's sustainable development.
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