Use of agricultural canal electricity sales

Issues before installation

I was worried that the procedure for installing a water turbine for power generation would be complicated at the Takao Agricultural Aqueduct in Niimi City, Okayama Prefecture, where there used to be a paper turbine. (At that time, there was no registration system for subordinate power generation)
In addition, consensus building with waterway managers, noise and dust countermeasures, and maintenance systems were issues.

Installation purpose

Converting the water flow of existing agricultural canals into electrical energy to operate an environmentally friendly and sustainable distributed generation system.

Benefits of Introduction

The completely discarded energy could be effectively used as a stable power source.
If the initial investment is recovered, the power generation cost will approach zero.
There are many such places because open-type fluid water turbines are used to generate electricity for wooden turbines that have been installed in many agricultural canals since ancient times. In addition, depending on the discussion with the river manager, bypass waterways and weirs are no longer required, so civil engineering work is no longer necessary and installation costs can be significantly reduced.
In addition, because of its simple structure, most of the garbage such as straw peculiar to agricultural canals passes through the water wheel, and maintenance costs can be significantly reduced compared to other methods.


Place of installation:  Takao, Niimi City, Okayama Prefecture
Waterwheel: Open type fluid water turbine
Shape: Diameter 3150mm Width  1300mm Height 4000mm (including booster part)
Maximum flow: 800ℓ/s
Rated power output: 7.5kW
Crop start period: March, 2016

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