Hokkaido’s 1st Battery-equipped Wind Power Plant

Tokyu Land Corp and Japan Wind Development Co Ltd built a wind power plant equipped with a storage battery system in Matsumae-cho, Hokkaido, Japan.

The plant, “Riene Matsumae Wind Power Plant,” reduces the fluctuation of its output by charging and discharging the battery and can stably supply electricity.

It is the first battery-equipped wind power plant in Hokkaido and meets Hokkaido Electric Power Co Inc’s “technical requirements concerning wind power generation facilities’ measures against output fluctuation.”

The rated output of the plant is 40.8MW (12 wind turbines with a rated output of 3.4MW each), and the capacity of the storage battery is 18MWh. The plant is expected to generate 1,05,900,000kWh of electricity, which is equivalent to the amount consumed by 30,000 households, per year.

The wind power generation facilities were manufactured by Siemens Gamesa Renewable Energy SA of Spain. The height of the tower is 94m, and the total height including the blades is 148m. The rated output of 3.4MW is the largest output of a commercial wind turbine operating in Japan as of April 2019.

The storage battery is a sodium-sulfer (NAS) battery of NGK Insulators Ltd, and the power conditioner employed for the plant is a product of Toshiba Mitsubishi-Electric Industrial Systems Corp (TMEIC).

As a general real estate developer, Tokyu Land has been pushing forward with various development projects. In regard to renewable energy-related projects, it has been engaged in the development of six wind power plants, 36 mega (large-scale) solar power plants and one biomass power plant (including plants under development) in Japan. Also, JWD has developed more than 20 wind power plants.

The 3.4MW wind turbine is the largest-output commercial wind turbine operating in Japan, followed by the 3.3MW wind turbine of Vestas Wind Systems A/S (Denmark) that is in operation in Wakamatsu-ku, Kitakyushu City, Fukuoka Prefecture.

For a verification project, Mitsubishi Heavy Industries Ltd’s floating-type offshore wind power generation facilities with an output of 7MW were built off the coast of Fukushima Prefecture. But the operation rate of the facilities has been low due to problems, and they are scheduled to be removed.

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