The Gigaton Throwdown Study was a collaboration of academics and industry experts, organized by the [[Gigaton Throwdown Initiative]], who evaluated the challenges and feasibility of scaling nine different technologies to avoid 1 gigatonne of carbon dioxide equivalent per year by 2020. They produced this plan of action: * _[Redefining What’s Possible for Clean Energy by 2020](http://www.gigatonthrowdown.org/files/Gigaton_EntireReport.pdf)_, [[Gigaton Throwdown Initiative]], 2009. The nine technologies discussed are [[biofuels]], increased efficiency, [[concentrating solar power]], construction material, [[geothermal power]], [[nuclear power]], plug-in hybrid electric vehicles, [[photovoltaic solar power]], and [[wind power]]. category: action [[!redirects Redefining What’s Possible for Clean Energy by 2020]]