Kyuden Mirai Energy Tidal Power Generation

MRE Project Site

Title: Kyuden Mirai Energy Tidal Power Generation

Status:

Operation Ended

Project Manager:

Kyuden Mirai Energy Company, Inc.

Tech Developer:

Kyuden Mirai Energy Company, Inc.

Start Date:

January 1, 2021

Info Last Updated:

April 8, 2024

Contact:

Daisuke Kitazawa
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PRIMRE Link:

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Website:

External Link

Details

Device Name:

Kyuden Mirai Energy Tidal Power

Technology:

Technology Subtype:

Support Structure:

Project Scale:

Installed Capacity:

0.5 MW

Country:

Japan

Physical Site:

Constricted Channel, Noisy Environment (>80 dB)

Water Depth:

40 m

Channel Width:

1-3 km

Description

At Naruseto in Goto City, Nagasaki Prefecture, Japan's first demonstration of tidal current power generation using a large generator (the rated power of 500 kW) was conducted. The goal is to realize an environment-friendly tidal power generation system that is compatible with Japan's weather and sea conditions, and to put it into practical use as soon as possible.

Location

Located at Naruseto, Goto City, Nagasaki Prefecture

Licensing Information

A local council was established in 2014. The installation site has been discussed among experts and local stakeholders in the council.

Project Progress

2019: A contract related to equipment rental and construction with a tidal current generator manufacturer was made. The optimal tidal current generator and its support structure, cables, and installation method were designed. The construction method and operation management were examined. Sea area was surveyed communicating with local stakeholders.

2020: A design evaluation conformity certificate was obtained from Nippon Kaiji Kyokai. A set of power generation equipment was produced and transported to Japan. Construction plan was approved by the Ministry of Ministry of Economy, Trade and Industry. The installation work and commissioning of a set of power generation facilities were completed.

2021: A pre-use inspection certificate was issued from the Ministry of Economy, Trade and Industry. Field demonstration test was carried out until December without any trouble.

Environmental Monitoring: Kyuden Mirai Energy Tidal Power Generation

ID	Phase	Stressor & Receptor	Design and Methods	Results
2078746	Baseline	Physical Environment	Current velocity measurements. Acoustic Doppler Current Profiler	October and December 2016 1.1-1.3 m/s (ave.) to 2.5-3.1 m/s (max.)
2078747	Baseline	Physical Environment	Underwater noise measurements Hydrophone surveys	Conducted November 2016, February, May, and August 2017 About 85 - 140dB
2078741	Baseline	Marine Mammals	Marine mammal surveys Visual observation and A-tag	Conducted November 2016, February, May, June, August, and September 2017 No mammals were found.
2078742	Baseline	Fish	Fish surveys Remotely operated vehicles and fishing	Conducted November 2016, February, May, and August 2017 20-30 species
2078743	Baseline	Birds	Bird surveys Visual observation	Conducted November 2016, February, May, and August 2017 7-12 species
2078744	Baseline	Invertebrates	Invertebrate surveys Visual observations and remotely operated vehicles	Conducted November 2016, February, May, and August 2017 Many species observed.
2078745	Baseline	Ecosystem Processes, Invertebrates, Water Quality	Water quality, plankton, larvae and juvenile fish surveys Water sampling and net surveys	Conducted November 2016, February, May, June, August, and September 2017 50,000-580,000 cells/L (phytoplankton), 700-76,000 ind./m3 (zooplankton), 130-73,000 ind./1000 m3 (larvae), 10-3,000 ind./1000 m3 (juveniles)