Sharp Corp announced June 8, 2011, that it has completed the "Sharp Eco House" in an industrial district in Sakai City, Osaka Prefecture, Japan, and disclosed it to mass media.
The company will start a field test of its technology to realize "ultimate power saving" by minimizing power consumption and ensuring the comfort of living space within June 2011. It has already started to collect preliminary data.
The Eco House was made by using many power-saving, power-generating and power-storing technologies that are currently available for houses.
They include (1) Sharp's photovoltaic (PV) battery with an output of 9kW, (2) LED lighting equipment that works together with a human presence sensor and an illuminance sensor, (3) a system that visualizes the power consumptions of home electronics, (4) power-saving home electric appliances that can be controlled by using an HEMS (home energy management system) and (5) "DC home appliances," which operate with direct-current (DC) electricity.
Furthermore, Sharp used a storage battery manufactured by Eliiy Power Co Ltd with an output of 8kWh, an electric vehicle (EV) made by Mitsubishi Motors Corp and Sharp's own power conditioner that can be combined with them.
'Net zero power consumption on annual basis'
According to the documents that Japan's Resources and Energy Agency published in 2010, the ratio of electricity consumed at home to the total electricity consumed in Japan is about 29%, which is not low. The Eco House can realize net zero consumption of grid electricity on an annual basis, Sharp said. In other words, it is possible to cover the entire electricity consumption with PV energy.
The breakdown is as follows. About 30% of the power consumption at home can be cut on an annal basis by purchasing the latest power-saving home electric appliances and LED lighting equipment. And the visualization of power consumption, the use of the automatic control function using the HEMS, the combination of the PV energy, storage battery and EV and the use of the DC home appliances cut approximately 15%, 10%, 35% and 10% of the total power consumption, respectively. They add up to 100%.
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