SUGAR LAND--December 27, 2016--Written by John Egan for Industrial Info Resources (Sugar Land, Texas)--Units of DTE Energy Company (NYSE:DTE) (Detroit, Michigan), like many other electric utilities, are closing coal-fired generation while building new gas-fired and renewable generators. When it comes to renewables, however, the Michigan-based utility holding company got there before many of its peers, and its investment dwarfs that of other electric utilities.