Solar photovoltaic (PV) energy appears as a very attractive candidate with potential to partially replace fossil fuels for electricity generation. Unfortunately, current PV technology is weather dependent, toxic, unrecyclable and dependent on expensive raw materials. PROTON is a Spanish technological company, based in Barcelona, specialized in developing biotech products for the clean energy industry. The company was established in 2015 with the mission to accelerate the energy transition towards renewable energy through the development of innovative solutions based on state-of-the-Art science in the fields of biotechnology, nanotechnology and photochemistry. PROTON’s PRO-S® will be the first 100% recyclable bio-based PV module in the market, capable of producing electricity even on low solar-radiation conditions thanks to its patented technology that uses bacterial proteins to absorb visible and UV light.