Technology
Sumitomo Electric
will put the next-generation large-scale storage and generation system into
practical use. The system has higher generation efficiency than the existing
silicon photovoltaic panel, and the installation cost is expected to remain the
same. The new system adopts the photovoltaic power generation called concentractor
photovoltaic system (CPV) that has two times higher generation efficiency than the
silicon photovoltaic panel. The company combined it with redox flow battery whose
electrode is hard to deteriorate. The system stores power generated by the
photovoltaic generation in the storage battery and discharge it depending on the
requirements of the production equipment inside the plant.
Sumitomo Electric
decided to install the system in its Yokohama plant. It has the photovoltaic
generation with the maximum output of 200 kW and the storage battery with the
capacity of five hours of 1 MW. The company says that it is the world’s largest
system of this kind. The system is expected to reduce power consumption about
10% in peak period. Total investment is 1 billion yen. Part of the system will
start operation in July, and the total system will start operation within the
year. The generation cost is expected to be the same between the existing
system and the new system.
Sumitomo Denko's micro smart grid demonstration system
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