Barcelona's subway system has implemented the MetroCharge project, utilizing energy from underground trains' brakes to power both the subway and electric vehicle (EV) charging stations. This initiative aims to enhance public transportation's sustainability and support the shift to privately owned EVs. The project is expected to recover its costs through reduced energy expenses and is part of a broader effort to improve energy efficiency amid climate change challenges in Spain. Teljes cikk (Euronews.com)