Model of Vietnam’s national power system

By 2025, Vietnam’s power system had a total installed capacity of more than 88,400MW, ranking first in Southeast Asia and 23rd globally. Of this, EVN owns 32,298MW, accounting for 36.5% of the nation’s total installed capacity.

The national power grid has extended to all regions of the country. EVN owns 100% of the transmission system, including 11,841km of 500kV lines; 20,667km of 220kV lines; 23,725km of 110kV lines; 41 substations at 500kV; and 168 substations at 220kV. 100% of 110kV substations and 86% of 220kV substations are now operated remotely and unmanned from regional control centers.

Electricity has reached 100% of communes and 99.74% of households, including remote, mountainous, border, and island areas. EVN supplies power to 18 islands, of which 14 are connected to the national grid.

The model also displays EVN’s power plants across provinces nationwide. In the North, there are large hydropower plants such as Hoa Binh, Son La, and Lai Chau, and major power centers such as Uong Bi, Pha Lai, Hai Phong, and Quang Ninh. The Son La Hydropower Plant, with a capacity of 2,400MW, is currently the largest in Southeast Asia. By the end of this year, when the expansion project of the existing Hoa Binh Hydropower Plant is completed, Hoa Binh Hydropower Plant will also reach a capacity of 2,400MW, equivalent to Son La.

In the Central region, there are many hydropower plants of different scales, typically the Ialy Hydropower Plant and other plants on the Thu Bon, Se San, and Srepok rivers. The region is also home to major power centers such as Nghi Son (Thanh Hoa) and Vung Ang (Ha Tinh). In the South, there are major thermal power centers such as Phu My, Vinh Tan, Duyen Hai, O Mon, and Nhon Trach; among them, Phu My (Ho Chi Minh City), Vinh Tan (Lam Dong), and Duyen Hai (Vinh Long) each have capacities surpassing 4,000MW.

The most outstanding highlight of the national power system is the 500kV North–South transmission line with three circuits: Circuit 1 with 1,487km in length, operational since May 27, 1994; Circuit 2 with 1,596km in length, operational since September 23, 2005; and Circuit 3 with 1,698km in length, with sections from Cau Bong (Ho Chi Minh City) to Quang Trach (Quang Binh) completed in August 2022, and the remaining section Quang Trach–Pho Noi completed in August 2024.

Model of Vietnam’s national power system. Photo credit: EVNEIC

500kV - 3x300MVA transformer model, engineered and manufactured by Dong Anh Electrical Equipment Corporation – Joint Stock Company (EEMC)

The 500kV, 900MVA transformer unit, consisting of three 300MVA single-phase transformers, is the main product of the national-level science and technology project.

The unit is currently the largest-capacity unit in operation on the national transmission grid and serves as the main equipment type on the 500kV North-South transmission line.

500kV - 3x300MVA transformer model, engineered and manufactured by Dong Anh Electrical Equipment Corporation – Joint Stock Company (EEMC). Photo credit: EVNEIC

Model of Hoa Binh Hydropower Plant’s generating unit

Near the virtual reality (VR) zone, the model of the generating unit by Hoa Binh Hydropower Company helps visitors understand the operating principles and the significance of this hydropower project for socio-economic development.

Model of Hoa Binh Hydropower Plant’s generating unit from Hoa Binh Hydropower Company

The Hoa Binh Hydropower Plant (formerly Hoa Binh Province, now in Hoa Binh Ward, Phu Tho Province) is an underground complex constructed inside the mountain. It has a large scale consisting of 8 generating units, each with a capacity of 240MW, for a total installed capacity of 1,920MW. The expansion project of the existing Hoa Binh Hydropower Plant is expected to be commissioned by the end of 2025, raising the plant’s total installed capacity to 2,400MW, with an average annual output of about 10 billion kWh. This will make Hoa Binh, along with Son La Hydropower Plant, one of the two largest hydropower plants in Vietnam.

Phu My 2.1 Thermal Power Plant Model by Power Generation Corporation 3 (EVNGENCO3)

The Phu My 2.1 Thermal Power Plant project commenced on April 7, 1996. This was also the first plant of the Phu My Power Center.

Phu My 2.1 Thermal Power Plant Model by Power Generation Corporation 3

By applying combined-cycle gas-steam technology, the plant increased its power generation efficiency from 35% to 55%, with the capability to operate on either natural gas or backup DO (Diesel Oil), thereby making an important contribution to national energy security.

Building Information Modeling (BIM) for project management by Power Engineering Consulting Joint Stock Company 2 (PECC2)

This is an advanced solution and a leading trend in civil construction, but has been pioneered by the unit for implementation in large-scale energy projects with complex systems.

To date, Power Engineering Consulting Joint Stock Company No. 2 (PECC2) has applied BIM to numerous projects ranging from thermal power, hydropower, and renewable energy to the national power grid, in combination with aerial image surveys and UAV technology.

Power Engineering Consulting Joint Stock Company 2 (PECC2) uses virtual reality (VR) technology to showcase Building Information Modeling (BIM) at exhibition. Photo credit: EVNEIC

Rooftop Solar Monitoring Application by Central Power Corporation (EVNCPC)

The Central Power Electronic Measurement Equipment Manufacturing Center (CPCEMEC) has researched, developed, and introduced to the market the NEXATUS monitoring and control solution. This reliable tool helps ensure that rooftop solar projects operate with stability, transparency, and sustainability.

Solar Power Monitoring and Control Device by Central Power Corporation (EVNCPC). Photo credit: EVNEIC

Electronic Meters and Remote Metering Systems awarded “Make in Vietnam” recognition by Central Power Corporation (EVNCPC)

At the digital transformation pavilion, Central Power Corporation (EVNCPC) introduced a new-generation electronic meter integrated with a remote metering system (AMR/AMI). These devices enable real-time data collection, anomaly detection, reduced measurement errors, and enhanced transparency in electricity accounting. The product was officially recognized as “Make in VietNam” in 2022, researched, developed, and manufactured entirely by the 100% intellectual efforts of EVN’s staff.

Product display area of EVNCPC at EVN’s exhibition booth

In addition, EVNCPC also introduced the SRFI product at the exhibition – the “smart eyes” for detecting incidents on medium-voltage grids, enabling instant detection, accurate fault localization, and rapid alerts to operators. In 2022, the product was recognized by EVN as “Make by EVN.”

Drone for Transmission Line Maintenance by National Power Transmission Corporation (EVNNPT)

One of the standout technological solutions introduced at EVN’s exhibition booth is an unmanned aerial vehicle equipped with a water-spraying system, used to clean insulators on live transmission lines of the National Power Transmission Corporation. This technology eliminates the need for power outages on transmission lines, reduces costs, labor, and time, and, most importantly, enhances the safety of both workers and equipment.

Drone of National Power Transmission Corporation

Outstanding Digital Technology Products of Ho Chi Minh City Power Corporation (EVNHCMC)

At the exhibition, Ho Chi Minh City Power Corporation (EVNHCMC) showcased a series of “Make by EVN” technology solutions serving the smart grid - ranging from microgrids for power source coordination, GIS-based grid mapping systems, online outage maps, OMS (Outage Management System), to smart glasses/helmets and testing equipment. All of these solutions are designed to enhance safety, efficiency, and digital transformation in grid operation and management.

EVNHANOI Customer Care Ecosystem

Launched in March 2021, the Customer Care Ecosystem of Hanoi Power Corporation (EVNHANOI) affirms the principle of “Customer-Centric”, providing 100% online electricity services to more than 2.9 million customers in the capital city. The ecosystem consists of 10 service channels, including the EVNHANOI App, website, call center, email, fanpage, chatbot, and others, ensuring customer requests are received and processed 24/7, consistently, and without interruption.

EVNHANOI guides visitors to experience customer care products

In 2024, the product was honored to receive two “Make in VietNam” Digital Technology Product Awards in the fields of social services and financial-commercial services.

Translator: Thu Hường