Masjed-Soleyman HPP, Iran
Chungju Multipurpose Dam, South Korea
Chungju Multipurpose Dam,
South Korea
Asahan 2 HPP, Indonesia
Asahan 2 HPP, Indonesia

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 CapacityCountry Name of Hydropower Project (HPP)Type of DamDam Height
7,100 MW
PakistanBunji HPP (under design) RCC Gravity200m
4,320 MW
PakistanDasu HPP (under design) RCC Gravity242m
2,400 MW
VietnamSon La HPP RCC Gravity138m
2,000 MW
IranMasjed-Soleyman HPP Rockfill177m
1,200 MW
ChinaTianshengqiao No.1 HPP CFRD175m
603 MW
IndonesiaAsahan No.2 HPP Gravity & Arch82m & 122m
600 MW
South Korea Muju Pumped Storage PP Rockfill-
400 MW
South KoreaChungju Multipurpose Dam CVC Gravity 97m
160 MW
VietnamDa Nhim HPP Earthfill Dam 38m
120 MW
Lao PDRNam Ngum No.1 HPP CVC Gravity 75m
95 MW
Nepal Kulekhani No.1 & No.2 HPP Rockfill 114m
60 MW
KenyaSondu-Miriu HPP CVC Gravity 18m
20 MW
China Guanyinge Multipurpose Dam RCD Gravity 82m
ulekhani No.1 & No.2 HPP, Nepal
Kulekhani No.1 & No.2 HPP, Nepal
Nam Ngum No.1 HP, Laos PDR
Nam Ngum No.1 HP, Laos PDR
Guanyinge Multipurpose Dam, China
Guanyinge Multipurpose Dam, China

page top