I watched the town hall and the rally in Iowa today online (the former from a Des Moines TV station and the latter on YouTube). Trump did say to two different questioners that he could support windmill subsidies but then went off on how expensive and uncompetitive they are and I got the impression he didn’t care for them as an energy source. So I ended up being a little confused about his actual personal position on this overall.
However, to his credit, I would like to point out that several questioners today tried to push him to promise to make the government give them things, and he refused. One man wanted him to have the government help pay for college training for needed workers in unfilled jobs. A woman wanted him to get the government to provide child care to working mothers, and there were a couple other questions like this.
On all of these, Trump stood his ground and didn’t pander to them, but talked about the problems of extra regulations and government involvement and suggested private companies like his should do more themselves (rather than the government). Eventually, during the Town Hall, Trump even said that maybe they should have gotten Bernie Sanders to speak to them instead (which I thought was pretty funny).
On wind power: I gathered Trump was against it, but he gave the reasons for it not really being feasible. It costs a lot to build, and then requires taxation to support it. It runs into problems with people who don’t want their view ruined, though he didn’t mention that, but local opposition can add to the costs. He seems to know a lot about it. I believe it’s less than one percent of our energy, also, so maybe not even worth bothering him with.