Long Phu 1 is a 1.2GW supercritical thermal power plant (TPP) being developed in the Long Phu district of Soc Trang Province, Vietnam. It is a key project under the Vietnamese Government’s 2011-2020 National Power Development Plan.

The coal-fired power plant is part of the Long Phu Power Centre, which comprises three coal-fired power facility projects Long Phu 1, 2 and 3 with a combined capacity of 4.4GW and other ancillary technical infrastructure. Vietnam National Oil and Gas Group (PetroVietnam) is the project owner and developer.

The Long Phu 1 and 2 power plants will feature two 600MW units each, while the Long Phu 3 will feature two 1GW units.

Early works at the Long Phu 1 site began in June 2015, and the two units are scheduled for completion in 2018 and 2019 respectively.

It is expected to have an annual output of approximately 7.8 billion kilowatt-hours (kWh) and will generate power sufficient to supply for approximately four million Vietnamese homes.

Long Phu 1 thermal power plant location

The Long Phu Power Centre will be constructed in approximately 420.5ha of land located 20km east of Soc Trang city, on the right side of the Hau River. The Long Phu 1 complex will cover approximately 115ha.

Long Phu 1 thermal power plant make-up

The Long Phu 1 thermal power plant will be installed with two GE D850 steam turbines featuring pre-assembled sections to minimise the erection time.

It will also consist of two coal-fired boilers with a capacity of 600MW each. The boilers will operate at a supercritical pressure between 250bar and 285bar and temperature between 540°C and 560°C.

The boilers will consist of 15,200kW high-voltage electric motors that drive the main and associated booster pumps. A geared variable speed coupling will be installed between the main pump and the motor to change the speed to achieve different operating parameters.

The power plant will use traditional condensing technology with supercritical parameters to fire the coal.

A 220kV/500kV switchyard system will be installed to enable transmission.

Coal handling at Long Phu 1 thermal power plant

Long Phu 1 will use approximately 3 million tonnes (Mt) of coal, which will be procured from Australia and Indonesia through intermediate ports.

The coal will be conveyed to the Long Phu port on Hau River by 10,000dwt barges from the intermediate ports. It will be unloaded and transported to the coal storage by conveyor belts, before being transported to the bunkers of the boiler.


Vnesheconombank and International Investment Bank (IIB) have reached an agreement with PetroVietnam to finance the Long Phu 1 power plant, under a memorandum signed in September 2017.

The funding will be used for the purchase of state-of-the-art industrial equipment from Russia, as well as for associated works and services.

Contractors involved

The consortium of Power Machines, BTG Holding, and PetroVietnam Technical Services Corporation (PTSC) was awarded the engineering, procurement and construction contract for the power plant in December 2013.

Power Machines is responsible for the progress and quality of the project in addition to maintaining coordination and interface connection between the contractors, while PTSC will be in charge of the construction and domestic services.

Power Machines subcontracted Valmet for the supply of automation system for the coal-fired boilers of the project, while Black & Veatch was contracted to design and manage the facility construction.

KSB Aktiengesellschaft, a company based in Germany, was awarded the contract for the supply of 22 power station pumps, while VA TECH WABAG won a $19m contract for the supply of water treatment plant.

Petrovietnam Engineering (PVE) is the project management consultant for the project.