As early as 2015, Tesla announced its Powerwall battery energy storage system for home use Now, Toyota has also announced its similar o-uchi kyuden system, which can obtain electricity from electric vehicles The system adopts the technology developed for the electric vehicle of the automobile manufacturer, with a rated capacity of 8.7kwh and a rated output of 5.5kwh.
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The system installed outside the house can charge itself through the municipal grid, a third-party solar panel or the user's own electric vehicle battery. Its design is applicable to both daily use and emergency power supply in case of power failure. Under extremely cold weather conditions, its operating ambient temperature range is -20 º C to 45 º C.
By using the included ios/android app, users can check their charging level, adjust their output or switch between different power supplies. The lithium battery pack itself measures 1142 x 341 x 432 mm and weighs 142 kg. An EV adapter and a hybrid regulator add 42 kg to the latter.
The o-uchi kyuden system will initially be sold only in Japan and is expected to start selling to home builders and construction companies in August. At present, its price has not been announced.