Press Release

Press Release

Commercial Operation Begins at Shin-Okuizumi Hydroelectric Power Station

March 20, 2018
Chubu Electric Power Co.,Inc.

Chubu Electric Power has announced that commercial operations for Shin-Okuizumi Hydroelectric Power Station started today. The station had been under construction since February 2017.

Shin-Okuizumi Hydroelectric Power Station is a regular water-flow release (note 1) power station newly erected directly below the right bank of Chubu Electric Power's Okuizumi Dam. To generate electricity, the station will effectively utilize water that previously had been released from the dam.

Chubu Electric Power is actively developing renewable energy to contribute to improving energy self-sufficiency rates and to reducing greenhouse gases. Because hydropower generation in particular has the potential of providing stable electric power generation, Chubu Electric Power will maintain efforts to develop both conventional and regular water-flow release hydroelectric power stations.

Well-planned efforts will also be made to modify existing hydroelectric power station facilities, thereby boosting output and electricity generation.

[Overview of Shin-Okuizumi Hydroelectric Power Station]

Name of station

Shin-Okuizumi Hydroelectric Power Station


Ikawa, Aoi-ku, Shizuoka City, Shizuoka Prefecture

Water system

Oi River System, Oi River (Class A River)


Okuizumi Dam (owned by Chubu Electric Power)

Maximum output

320 kW (Note 2)

Power generation method

Dam-type power (regular water flow release)

Max. water consumption


Effective head

19.0 m

Projected annual electricity output

Approximately 1,300,000 kWh
(equivalent to annual electricity consumption of some 420 average households)

Start of work

June 08, 2017

Start of commercial operation

March 20, 2018

(Note 1) Regular water flow release indicates a flow rate for protecting plants and animals and maintaining fishery, scenery, and cleanliness of running water.

(Note 2) Based on internal test run results, the maximum output has been changed from the originally planned 290 kW to 320 kW.

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