Storage demonstration project set for Japanese island

Takaoka Toko Co. Ltd. has selected Saft’s Intensium Max Li-ion containerised battery system to provide energy storage for a demonstration microgrid project – aimed at expanding the installation of reneable energy using systems – on the remote Japanese island of Niijima in the Tokyo prefecture.

The ESS (Energy Storage System) will perform operations such as ramp and frequency smoothing for Takaoka Toko Co., Ltd. ” a subsidiary of Tokyo Electric Power Company (TEPCO).

The demonstration project on NiiJima Island will comprise diesel generators, solar panels and wind power installations working in various combinations to optimize the usage of renewable energy resources.

The Japanese government is attempting to reduce the country’s dependency on fossil and nuclear based energy generation. This has resulted in the setting of targets to increase the proportion of electricity to be generated from renewable sources from the current 10 per cent to 13.5 per cent in 2020 and 20 percent by 2030.
Japanese flag
For an experimental period of 5 years, this project has as its principal objective to highlight the technical challenges (such as expected electric power quality and grid management) that need addressing when renewable energies ” especially wind generation ” are associated with electric power systems and to study the related solutions.

Niijima is a volcanic island in the Philippine Sea, South-East from Tokyo at about two and a half- hours by jet boat. Its small area and population of around 3,000 people is the perfect location for this demonstration project as a miniature model of Japan in anticipation for 2030.

The ESS will comprise one of Saft’s well proven Intensium Max 20 M Medium Power containerised Li-ion battery systems, modified to offer a nominal storage capacity of 520 kWh and 1 MW peak power output. The battery will operate in combination with Takaoka-Toko’s intelligent control systems that enable large amounts of wind and other renewable energy based power to be integrated into diesel powered grids, ensuring system stability and smooth control of the gensets.

The demonstration site is currently under construction and the installation and commissioning of the Saft ESS is planned for early 2015.

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