California just passed one of the most aggressive climate bills in history, making it the first large economy to mandate carbon-free electricity by 2045. The bill that Governor Jerry Brown signed into law, SB 100, requires the state to reach 100 percent clean electricity in less than 30 years, with interim goals along the way, including 60 percent by 2030. Yet, Governor Brown took an even bolder step, not only signing the legislation but also issuing an executive order calling on the entire economy to become carbon neutral by 2045, not just utilities…