Ontake Nagano is a 68.6MW hydro power project. It is located on Nishinogawa river/basin in Nagano, Japan. According to GlobalData, who tracks and profiles over 170,000 power plants worldwide, the project is currently active. It has been developed in a single phase. Post completion of construction, the project got commissioned in 1945. Buy the profile here.


The project is currently owned by The Kansai Electric Power.

The hydro reservoir capacity is 0.59 million cubic meter. The net head of the project is 229.21m. The total number of penstocks, pipes or long channels that carry water down from the hydroelectric reservoir to the turbines inside the actual power station, are 3 in number.

The hydro power project consists of 1 turbine with 25MW nameplate capacity.

The project has 3 electric generators installed at the site.

Development status

The project got commissioned in 1945.

Contractors involved

Hitachi Mitsubishi Hydro was selected as the turbine supplier for the hydro power project. The company provided 2 units of francis turbines, each with 47.6MW nameplate capacity.

For more details on Ontake Nagano, buy the profile here.


GlobalData, the leading provider of industry intelligence, provided the underlying research used to produce this article.

This information is drawn from GlobalData’s Power Intelligence Center, which provides detailed profiles of over 170,000 active, planned and under construction power plants worldwide from announcement through to operation across all technologies and countries worldwide.