This graph from the Energy Information Administration communicates the reality of renewable energy in America better than any other single source. Renewable energy covers only a small slice, 8 percent, of the country’s needs. And despite the focus on biofuels and solar power, the chart shows that more than a third of that slice comes from hydropower. In the wider world, an even greater proportion of renewable energy comes from hydropower—83.8 percent of renewable generation, according to the International Energy Agency.
