The authors of the global warming bill (AB 649/SB 450) unveiled the long-awaited changes to the legislation. The substitute amendment, encompassing over 150 pages, removes controversial provisions such as the low carbon fuel standards and California’s low emission vehicle standards. 

However, the legislation still requires the most controversial provision -- the renewable energy mandate. The legislation still imposes a requirement that Wisconsin utilities generate 20 percent of their electricity from renewable energy by 2020, and 25 percent by 2025. Business groups strongly oppose this measure arguing that such a mandate will increase energy rates and cost Wisconsin jobs.