Okutadami is a 560MW hydro power project. It is located on Sodesawa river/basin in Fukushima, Japan. The project is currently active. It has been developed in single phase. The project construction commenced in 1953 and subsequently entered into commercial operation in 1960.

Project Type Total Capacity (MW) Active Capacity (MW) Pipeline Capacity (MW) Project Status Project Location Project Developer
Hydropower 560 560 Active Fukushima, Japan Electric Power Development


The project is developed and owned by Electric Power Development.

The hydro reservoir capacity is 601 million cubic meter. The net head of the project is 164.2m.

The hydro power project consists of 3 turbines, each with 120MW nameplate capacity.

The hydro power project consists of 1 turbine with 200MW nameplate capacity.

The project has 1 electric generator installed at the site. The generator capacity is 223 MVA.

Development Status

The project construction commenced in 1953 and subsequently entered into commercial operation in 1960.

Contractors Involved

Toshiba Hydro Power (Hanzhou) supplied 3 electric generators for the project. The generator capacity is 133 MVA.

About Electric Power Development

Electric Power Development Co Ltd (J-Power) is a wholesale electric utility that supplies hydroelectric and thermal power. It owns and operates a network of hydroelectric, thermal, wind and geothermal power plants. The company provides electricity and transmission services to major electric power companies in Japan. It constructs and operates power transmission and transforming facilities. J-Power’s other activities comprises environmental, telecommunications, overseas generation investment, consulting, selling of coal and resource management. The company owns and operates power generation facilities in several countries including Thailand, the US and China. J-Power is headquartered in Chuo-ku, Tokyo, Japan.


All power projects included in this report are drawn from GlobalData’s Power Intelligence Center. The information regarding the project parameters is sourced through secondary information sources such as electric utilities, equipment manufacturers, developers, project proponent’s – news, deals and financial reporting, regulatory body, associations, government planning reports and publications. Wherever needed the information is further validated through primary from various stakeholders across the power value chain and professionals from leading players within the power sector.