CC47 wins bid to construct Bac Ai pumped storage hydropower plant for phase 2, stage 1

Vu Phong Energy Group’s associate company, Construction Joint Stock Company 47 (CC47), a member of the contractor consortium that includes Lung Lo Construction Corporation, Song Da Corporation-JSC, LILAMA 10 Joint Stock Company, SCI E&C Joint Stock Company, Truong Son Construction Corporation, and Vietnam Construction and Import-Export Joint Stock Corporation, has successfully won the bid and signed the contract for Package No. 02XL-BA. This package covers the construction of The Bac Ai pumped storage hydropower plant for phase 2—a key project contributing to Vietnam’s long-term sustainable renewable energy strategy.

The significance of the pumped storage hydropower project

The Bac Ai pumped storage hydropower plant for phase 2 is part of Vietnam’s strategy to develop renewable energy sources, particularly hydropower, ensuring a stable electricity supply for the Central region and surrounding provinces. The project has the participation of strategic partners, including EVN (Vietnam Electricity) and major contractors in the construction sector.

Located in Bac Ai District, Ninh Thuan Province, the project is included in the national power development plan, approved by the Prime Minister under Decision No. 428/QD-TTg dated March 18, 2016, which revised the National Power Development Plan for 2011–2020, with a vision toward 2030 (Revised PDP VII). With a total capacity of 1,200 MW—making it the largest pumped storage hydropower project in Southeast Asia—the plant consists of four turbine/pump-generator/motor units, each with 300 MW of capacity. The total investment is approximately VND 21,100 billion, with financing sourced from loans and EVN’s allocated capital. This is Vietnam’s first-ever pumped storage hydropower project.

Previously, in Phase 1, CC47 completed the construction of the “Discharge Gate Cluster” 15 days ahead of schedule. This early completion not only demonstrated CC47’s capability and commitment but also contributed to maintaining the overall project timeline.

Image from the Bac Ai pumped storage hydropower plant for phase 1

Contract signing ceremony for the pumped storage hydropower package

The contract signing ceremony for Package No. 02XL-BA took place on February 13, 2025, with representatives from EVN and other stakeholders in attendance. The contract has a total value of VND 4,334 billion, with expected completion by May 2031. Key project milestones have been set to bring the turbines into operation by the end of 2030.

Representatives from Power Project Management Board 3 and the contractor consortium signed Package No. 02XL-BA contract for the construction of Phase 2, Stage 1 of the Bac Ai pumped storage hydropower plant

The Package No.02XL-BA is the main package of Bac Ai pumped storage hydropower project with the key tasks: Construction and installation of main works (Pressure Tunnels, Upstream Surge Tank, Underground Powerhouse and 500kV Switchyard, Discharge Tunnel, Downstream Surge Tank, Downstream Valve Tower); Underground Tunnels and Adits; Access Roads for Construction and Operation; 22kV Power Supply System, Water Supply System for Construction and Domestic Use; Auxiliary Facilities, Worker Camps and Offices. The construction period is about 81 months. In particular, the generation progress of Unit #1 is scheduled for December 2029, Unit #2 for April 2030, Unit #3 for August 2030, Unit #4 for December 2030 and the entire Contract will be completed in May 2031.

Beyond its economic benefits, the project plays a crucial role in Vietnam’s greenhouse gas emissions reduction strategy, aligning with the Net Zero commitment by 2050.

Delegates attending the contract signing ceremony

Vision for sustainable energy

The Bac Ai pumped storage hydropower plant for phase 2 is part of Vietnam’s long-term strategy to transition toward renewable energy, reduce carbon emissions, and protect the environment. Vu Phong Energy Group, alongside CC47, is committed to collaborating with industry partners to drive this transition forward, contributing to the realization of Vietnam’s Net Zero goal.

With the involvement of leading contractors and experts, the project is expected to become one of Vietnam’s most significant pumped storage hydropower facilities, supporting the country’s sustainable energy development.

Vu Phong Energy Group