Posted by Carlos on June 13, 2009 ·
Metro de Bilbao has announced that the subway system of the Spanish city would run on renewable energy. That would make Bilbao the first city in the world to have a subway system that completely runs on renewable energy. The energy is being supplied by a company called Naturgas.
It has saved about 46,000 metric tons of CO2 and saved about 33% of energy. [...]