Google expects to run solely on renewable energy in 2017
All of its offices and data centers will run on purchased solar or wind power.
The EU plans to cut 30 percent of its energy usage by 2030
The European Commission's latest proposal goes even further than its commitments at the Paris Climate talks.
Six unexpected sources of renewable energy
Think: Las Vegas streetlights powered by footsteps.
Solar dish sets steamy thermal energy efficiency record
It's thought to be the world's most efficient solar receiver.
Harvard's battery tech takes cues from vitamin B2
They only had to make a couple of tweaks to the original B2 molecule.
Apple will turn landfill gas into sweet electricity
While everyone obsesses about headphone jacks, Apple's becoming a power company.
England isn't windy enough for new turbines, claims industry boss
It's not really sunny enough for solar, either.
Santiago subway will be the first powered mostly by the sun
The system is getting a direct connection to its own solar farm.