March 8th, 2017 | by Guest Author
The deal, called “Sonnen flat,” offers free power to households using the company’s integrated solar and storage system, including for any electricity drawn from the grid when the sun goes down and stored energy is used up.
February 19th, 2017 | by Tina Casey
Originally published on CleanTechnica by Tina Casey The news has been flying thick and fast about Germany-based sonnen, maker of
February 6th, 2016 | by James Ayre
The European energy storage company Sonnen is partnering with the US companies SolarWorld and PetersenDean as part of its push