Notification of Start of Business Service of Hydraulic Power Station (Kumamoto / Uchitani First Power Station and Uchitani Second Power Station )

  • Press release
  • UP
  • jnc

JNC CORPORATION (Chiyoda-ku, Tokyo, CEO & President: Keizo Yamada) announces the completion of renovation of the hydraulic power station owned by JNC in Yatsushiro-city,Kumamoto, and its new start of business service.

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JNC Group regards the environment and energy group as an important business domain. We own hydraulic power stations (total maximum output of 98,200 kW) in 13 places and photovoltaic power stations (total maximum output of 5,100 kW) in 3 places in Japan for developing the power generation business using renewable energy.

 Among the hydraulic power stations undergoing large-scale renovation since 2013, the Uchitani First Power Station and Uchitani Second Power Station has started business service.  By renewing the water turbines and generators to high-efficiency equipment, the maximum output was increased by 100 kW (about 1%) while keeping the approved water intake amount.  JNC will take advantage of the power generation technologies cultivated so far to contribute to the society by supplying stable energy in future years with consideration for the environment.

 All of our hydraulic power stations adopt a "run-of-river type" system.  In this system, foreign matters are removed from river water, the water is guided via a channel into a head tank and dropped through a penstock to turn a water turbine for generating electricity.  Since the run-of-river type hydraulic power generation does not require a large-scale dam, it is friendly to the environment, has low carbon dioxide emission and provides precious, purely domestically-produced energy.

 <Outline of Uchitani First Power Station >

(1)Location Sakamoto-machi, Yatsushiro-shi,Kumamoto
(2)Maximum output

Before renovation

16,500 kW

After renovation

16,600 kW(annual power generation amount for about 24,200 houses)

(3)Investment About 4.5 billion yen
(4)Start of construction work May 2021
(5)Start of business service May 1, 2023

<Outline of Uchitani Second Power Station >

(1)Location Sakamoto-machi, Yatsushiro-shi,Kumamoto
(2)Maximum output

Before renovation

8,200 kW

After renovation

8,300 kW(annual power generation amount for about 12,100 houses)

(3)Investment About 3.5 billion yen
(4)Start of construction work May 2021
(5)Start of business service May 1, 2023