German company sonnen GmbH provides storage systems for solar energy. The concept of becoming independent from energy providers by using self-generated energy is not only genius, but also the way forward in a world that is recognising the necessity of sustainable energy. Founded in 2010 by Christoph Ostermann and Torsten Stiefenhofer, sonnen promoted the visionary idea to enable people with solar panels to use for their own energy. Up to this point, their solar energy was entirely fed into the power supply network for a fee. Although there was no demand, Ostermann and Stiefenhofer had great faith in their vision of everyone being able to use their own clean energy. They started what would become an incredibly successful journey.
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