Gerard Anderson is among the most outspoken climate hawks in the utility industry. Last year, the DTE Energy Co. CEO committed his company, the largest utility in Michigan, to reducing carbon emissions by 80 percent of 2005 levels by 2050. DTE has plans to shutter all its coal plants by 2040 and has said it will double its renewable capacity from 1,000 megawatts to 2,000 MW by the early 2020s.