Nakashin Ike Laketricity Japan
Nakashin Ike water treatment
Nakashin Ike Floating solar plant

Nakashin Ike

Floating solar panels on an water supply pond

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It is a pond owned by Kato City, and a water purification plant is adjacent to it. The water from the reservoir is used as tap water.

In recent years, there have been concerns about the deterioration of water quality due to the proliferation of phytoplankton caused by global warming. Therefore, one of the reasons to start the project was to improve water quality by installing a floating solar power plant.

We rent a pond through a lease agreement with Kato City and pay the amount of use to Kato City.

Our role on the project

  • Project development & management
  • Stakeholder consultation & building permit issuance
  • PPA negotiation & financing
  • Construction assistance & supervision
  • Operation & Asset management
  • Maintenance

1007 kWp Power generation capacity

50% Coverage ratio

About Nakashin Ike project

Location Kato, Japan
Capacity 1007 kWp
Domestic consumption equivalence 230 homes
Tons of CO2 emissions saved 480 tons
Operational start date Septembre 2022
Application Drinking water reservoir

About the Drinking water reservoir

Pond size 1.6 ha
Maximum depth 4.99 m
Water type Drinking water
Power plant size 0.8 ha
% of coverage 50%

Technical specifications

Number of solar panels installed in Kato 1851
Panels specifications 540W, 144 cells, DMM

About anchoring

Anchoring type At the bottom
Anchor type Screw anchor

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