ENERGIESTRO took part in the »Science » category, devoted to energy storage with its »Solar Storage Wheel » (project VOSS). EDF received over 200 projeccts. The process of selecting the two finalists lasted several months and culminated on March 10 2015 with the presentation of the two projects before a panel of experts at EDF headquarters. The other finalist was the »Reverse Electrolysis » project submitted by the German company Sunfire. The two projects were judged by he public who voted on line between April 7 and May 3. EDF recorded 240,000 votes.
The name of the winner was announced on June 4 during a ceremony at the »Palais de Tokyo » in Paris, in the presence of Axelle Lemaire, Secretary of State for Internet Technology and Jean-Bernard Levy, Chairman of EDF. Having convinced the experts VOSS has also caught public attention, since it obtained 71% of the votes, thanks to an innovative breakthrough.
By replacing traditional materials for the flywheel, (steel or carbon fiber, both too expensive, with concrete, (much cheaper) ENERGIESTRO makes it possible for the first time to store intermittent renewable energy, thus removing the last obstacle to its widespread use.