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Mitsubishi Electric Delivers High-capacity Energy-storage System to Kyushu Electric Power's Buzen Substation

Will contribute to stable power supply with world-leading 50,000-kilowatt storage battery system

TOKYO, March 3, 2016 - Mitsubishi Electric Corporation (TOKYO: 6503) announced today its delivery of the world's largest energy-storage system-50 MW output and 300 MWh rated capacity-to Kyushu Electric Power Co. on March 3. The system, which is part of a pilot project to balance supply and demand via high-capacity energy-storage systems, was installed at the Buzen Substation in Buzen, Fukuoka Prefecture.

Large-scale energy storage system
at Kyushu Electric Power's Buzen Power StationBattery (double stacked)
The facility offers energy-storage capabilities similar to those of pumped hydro facilities while helping to improve the balance of supply and demand when renewable energy sources are used. The energy storage system achieves effective overall control and improved operational efficiency through the use of Mitsubishi Electric's BLEnDer® RE battery SCADA system to monitor and control modules in a multiple module system. Also, containerized, compact (double stacked) battery modules help to reduce the facility footprint, installation time and construction costs.

System Configuration
Battery SCADA System Efficient battery control achieved via BLEnDer RE
Sodium Sulfur (NaS) Battery World-leading 50MW / 300MWh; 252 containers, each providing 200kW in 63 4-module units; 14,000m2 area (100m x 140m); Produced by NGK Insulators, Ltd.
Power Conditioner 800kW x 63 units
Substation Equipment 66 / 6.6kV transformer x 2 units, other 6.6kV substation equipment