Renewables have two fundamental flaws in them that have been with us since the turn of the last century. First off they are not reliable as base load generation. When a KW is needed on the demand grid, it must instantly be generated for that demand or the lights don't come on. The regulated power base that we all pay for has to double the investment for back up generation such as natural gas fired processes for wind farms. Secondly they are enormously expensive. Wind and solar are heavily subsidized by tax payers and utility rate payers. Wind alone subsidies  in a $2.50/mmbtu natural gas market amount to $6.25/mmbtu in real cost. this is a fact that is conveniently ignored. This hurts Xcel and their power customers because as the rates for power go up, demand destruction kicks in and Xcel is not selling as much power as they need to grow their business to stay in business. Coal will continue to be a huge part of India and China because they are emerging economies and need cheap energy