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NEC introduces Li-ion household energy storage and control system

NEC Corporation is introducing in Japan a 6 kWh Li-ion battery household energy storage system that automatically controls electrical power in the home. Initially, 100 units of the system will be available for home construction companies and businesses beginning 18 July 2011.

The system, installed outdoors, connects to a home’s distribution panel and enables interactive coordination with a power company’s power supply system and a household’s electric devices, solar power systems and other equipment.

This interactivity enables the system to store power during nighttime hours, when power consumption is low, then to use the stored power during afternoon hours, when power consumption reaches its peak. This reduces both the demand on power companies as well as household electricity charges.

The system is equipped with transmission functions that enable remote observation of its operational status and convenient provision of maintenance services.

Recently, in consideration of the supply and demand conditions for electricity during summer in Japan, initiatives to shift the peak afternoon power consumption time and reduce the overall volume of power consumption are steadily advancing. Furthermore, households have become increasingly aware of the importance of access to electricity for essential needs in the event of an emergency or blackout, in addition to the necessity of power conservation.

NEC aims to drive the expansion of household energy storage systems in 2012, and to continue promoting system development in the future.



NEC is positioning itself to enter the residential energy appliance business in a big way. They stand to make a large fortune doing so.


This could be one of the best way to reduce peak power demands and to close existing polluting coal fired power plants. Install 100,000,000 similar units (10 Kw each) together with appropriate size solar panels. Something like (2 Kw **) would do for the average house and most of the polluting power plants could be closed.

(**) people with PHEVs or BEVs would need more solar panels or use low cost grid power for night charging the vehicle battery.


Of, course, SEER 26+ Heat Pumps should be installed at the same time.

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