The majority of energy the U.S. produces comes from coal. The same holds true for Wisconsin. However, natural gas has been gaining, because producers have found a cheaper way to extract it, using sand.
Listen to Mitch Teich's interview with Todd Myers.
What is green energy's potential? It’s a question that’s being asked on a national scale - especially in the wake of some highly publicized missteps, such as the failure of the solar company Solyndra, which had significant funding from federal sources.