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A German energy storage giant has chosen the former Holden car factory in Adelaide’s northern suburbs as the centre of its Australian operations.

sonnenFlat: sonnen’s ‘free’ / flat-rate electricity plan looks great. Is it worth it?

Battery player sonnen aims to 'take the utility out of business'

Germany’s sonnen offers ‘free’ grid power deal to solar users

sonnen is pleased to announce the closing of its latest financing round of €60 million, led by Shell Ventures and significantly supported by all existing investors. The investmenr enables sonnen to expand its strategy of rapid international growth and to further enhance its pioneering position as the "utility of the future"

German energy storage systems manufacturer sonnen has introduced a radical new way of helping households cope with ever-rising power costs. The German battery storage maker will absorb all electricity charges, and instead charge a flat fee (of $30, $40 or $50 a month depending on the size of the dwelling and capacity of its rooftop solar array) for those households installing the company’s energy storage systems, saving the average home around $3,000 a year in power costs. 

Until now, it was only possible for home owners to use a home energy storage unit that was connected to their own photovoltaic system or another off-grid energy source. However, members of the sonnenCommunity in Germany can now obtain, store and use free electricity from the community without needing to generate their own power.