Depending on the lay of the land and your access to the slopes, installing just below the peak might be best. If the lay of the land is just right, daytime heating and the warm air rise from the lower altitudes create a wind effect you might capture for energy. I'd also look at a
wind map (this is only one of many) and determine from where you live if wind should be a primary or a small scale supplement.
Another valuable resource IMO is Home Power magazine. I've subscribed for years and some of the articles can get very technical while others not so much. But the magazine has stayed true to its purpose and it's packed with good info. Here's the link to the section on
wind power that is pretty basic and you can decide where you want to go from there.