Celebrating life with renewable energy events thanks to off-grid, Hi-Fi and powerful sound systems. SolarSoundSystem (or "3S") offers a participatory and sustainable experience with sound systems for all kind of events up to 1500 people. Worldwide. Our systems, 100% off-grid, are powered by two renewable energies: - The Sun, in most cases and in a constant way. - The public, pedaling on bicycles with generators. We had put our systems at the disposition of music festivals, NGOs, institutions, companies and artists with more than 500 events on the counter. In addition to 6 existing branches in France, Switzerland, Germany, Hong Kong and Israel, we have built solidarity projects in Haiti, Brazil, India, Taiwan and Cameroon. In short, we offer innovative, sustainable and participatory performances with high energetic and technological value. We are also hosting a 100% solar powered web-radio : https://Radio3S.org