The new solar thermal power plant in Spain stands at 40 storeys high and looks as if it was being hosed with giant sprays of water from afar. Upon closer inspection, one realizes that this tower is reflected by a field of 600 gigantic mirrors, generating up to 11 Megawatts of electricity without emitting a single bit of greenhouse gas. That’s enough juice to power up to 6,000 homes as the focused rays turn water into steam that subsequently generate power by turning the turbines. When the sun goes down, enough heat has already been stored in the form of steam to continue power generation for approximately an additional hour, although future advances hope to increase that time.