But Seth Darling at Argonne says the United States won't be likely to see hundreds of gigawatts of solar running at grid parity until 2025, at the earliest. (news.nationalgeographic.com)
According to Habib Dagher, director of the University of Maine's Advanced Structures and Composites Center, which is developing offshore wind technology, within 50 miles of Maine's coast there is a potential capacity for 156 gigawatts in wind capacity, which could significantly reduce carbon emissions. (friendsofmainesmountains.org)
Australia's renewable energy certificate scheme requires electricity retailers to sell a certain number of annual gigawatt hours of renewable energy, increasing on a growing trajectory. (solarpaces.org)