# Vietnam power transmission infrastructure development

> Developing situation record from CLSTR: https://clstr.news/situations/vietnam-power-transmission-infrastructure-development
> Updated: 2026-10-27T02:48:00.000Z. Sources: 5. Developments: 2.

The National Power Transmission Corporation (EVNNPT) is advancing multiple high-voltage transmission projects across Vietnam to enhance grid stability and integrate renewable energy.

In Thanh Hoa province, construction is underway for the 220 kV Sam Son substation and its connecting 40.1 km transmission line. The project aims for completion by December 2026, though authorities are working to resolve site clearance bottlenecks involving compensation disputes and inheritance procedures in Dong Quang and Quang Ninh.

Separately, EVNNPT has been approved to invest over 923 billion VND in the 220 kV Mo Cay – My Tho transmission line. Spanning 36.23 km through Vinh Long and Dong Thap provinces, this project is scheduled for completion by the end of 2028. It is designed to transmit wind and solar power from the Southwest region into the national grid and alleviate load pressure on existing lines in the My Tho area, which have recently operated at 90-100% of their rated capacity.

## Claims

- The total investment for the project exceeds 923 billion VND. (reported by 3 sources)
- The project length is approximately 36.23 km. (reported by 3 sources)
- EVNNPT is the approved investor for the 220 kV Mo Cay – My Tho power line project. (reported by 2 sources)
- The project is scheduled for completion by the end of 2028. (reported by 2 sources)
- The project will transmit renewable energy from the Southwest region into the national grid. (reported by 2 sources)
- The project includes installing 220 kV equipment at two bays each at the Mo Cay and My Tho substations. (reported by 2 sources)
- The project's operational term is 50 years. (reported by 2 sources)
- Certain 220 kV lines in the My Tho area operated at 90-100% rated capacity in September 2026. (reported by 1 source)

## Timeline

### 2026-10-27: EVNNPT to invest 923 billion VND in 220 kV Mo Cay - My Tho power line

EVNNPT will invest over 923 billion VND in the 220 kV Mo Cay – My Tho power line to transmit renewable energy and alleviate load warnings in the My Tho region by 2028.

5 sources. https://clstr.news/cluster/evnnpt-to-invest-923-billion-vnd-in-220-kv-mo-cay-my-tho-power-line

### 2026-10-02: Sam Son 220 kV substation project targets December 2026 completion

EVNNPT aims to complete the 220 kV Sam Son substation and connecting lines in Thanh Hoa by December 2026, focusing on resolving remaining site clearance bottlenecks.

4 sources. https://clstr.news/cluster/sam-son-220-kv-substation-project-targets-december-2026-completion

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Cite as: Vietnam power transmission infrastructure development. CLSTR, https://clstr.news/situations/vietnam-power-transmission-infrastructure-development