Nippon Koei is highly experienced in delivering hydropower dams and facilities.
We have worked on more than 100 hydropower dams in 25 countries and have supervised construction of at least 60 of them with total 20,000 MW installed capacity.
Our strong experience in all project stages allows us to evaluate alternative types of dams for actual site conditions and propose the most optimum one, and then efficiently revise the design. Our experience also allows us to adjust powerhouse requirements for civil, hydro-mechanical, and electro-mechanical technologies from design stage to construction stage. Among Japanese engineering companies in hydropower development, we have by far the largest global track record.
Our design knowledge and construction experience covers all kinds of hydropower stations and multipurpose dams.
Nippon Koei has in-house the many kinds of specialists required for all project stages. We also have the sophisticated tools and technologies at the Nippon Koei R&D Center to execute design works; these include facilities for hydraulic model testing which is required for dam design, seismic performance evaluation using smeared crack model, crack evaluation using extended fictitious crack model, and 3-D analysis of underground structures such as pressure tunnel, underground cavern of powerhouse, etc.
We also provide high quality engineering services to formulate rehabilitation plans based on the determination of cause of damage, and to formulate expansion plans to suit changes in the surrounding area.
Selected Overseas Project Experience showing Installed Capacity Range
|No.||Installed Capacity||Country||Name of Hydropower Project (HPP)||Type of Dam||Dam Height|
|1||7,100 MW||Pakistan||Bunji HPP (under design)||RCC Gravity||200m|
|2||4,320 MW||Pakistan||Dasu HPP (under design)||RCC Gravity||242m|
|3||2,400 MW||Vietnam||Son La HPP||RCC Gravity||138m|
|4||2,000 MW||Iran||Masjed-Soleyman HPP||Rockfill||177m|
|5||1,200 MW||China||Tianshengqiao No.1 HPP||CFRD||175m|
|6||603 MW||Indonesia||Asahan No.2 HPP||Gravity & Arch||82m & 122m|
|7||600 MW||South Korea||Muju Pumped Storage PP||Rockfill||-|
|8||400 MW||South Korea||Chungju Multipurpose Dam||CVC Gravity||97m|
|9||160 MW||Vietnam||Da Nhim HPP||Earthfill Dam||38m|
|10||120 MW||Lao PDR||Nam Ngum No.1 HPP||CVC Gravity||75m|
|11||95 MW||Nepal||Kulekhani No.1 & No.2 HPP||Rockfill||114m|
|12||60 MW||Kenya||Sondu-Miriu HPP||CVC Gravity||18m|
|13||20 MW||China||Guanyinge Multipurpose Dam||RCD Gravity||82m|