To date, construction work has met or exceeded scheduled targets. More than 6km of the planned 16km of tunnel system have been completed, along with 208 meters of the underground powerhouse's length and 25 meters of its planned 53-meter height. EVN has highly praised the technical quality and workmanship of the project.

Below are photos capturing officers and employees of Lung Lo Construction Corporation working on the tunnels of the Bac Ai Pumped-Storage Hydropower Plant.

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Lieutenant Colonel Le Dinh Lam, Deputy Head of the Technical and Equipment Division of Lung Lo Construction Corporation and executive director of the contractor consortium, briefs project units on the construction plan.
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A specialized Boomer L2D tunnel-boring rig works on the project’s tunnels.
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Inspecting tunnel construction inside the mountain
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Reinforcing the arch frame before concrete pouring
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The tunnel extends deeper into the mountain as construction progresses.
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Transporting equipment into the tunnel for construction work

Translated by Chung Anh