This paper shows how much more efficient switchgrass is at producing ethanol than corn. This video is an interesting look at this whole issue:(Engineering Explained - America Was Wrong About Ethanol) ▶ this video Especially his summary, where corn creates 20 percent less GHG than gasoline and ''breaks even'' after 28 years, while switchgrass creates 94% less GHG and breaks even in it's first year.
in “Net energy of cellulosic ethanol from switchgrass” · View on HN