I have to say... wind power won't screw up your radio reception and is very quiet done properly. (it does have the big problem of being useless without wind though.) (I'm a big fan of wind power, but not yet an expert.)
That said, if you have a idea work on it and see where it goes. Be prepared if it can't work for some reason... I've had some ideas that after some research I discovered for one reason or another weren't going to work very well... But in following that path I had new ideas.... and following up with those ideas I had more ideas... and some of those turned out to be things I could make work in my house...
I don't feel one should think of gravity as energy... you could think of mass kept away from another mass a kind of energy storage, for example the lake at a hight elevation feeding a dam allowing the water to fall to a lower elevation. The energy from a dam comes from the sun heating water... to clouds, to rain or snow.... Falling at a higher elevation than the dam. Gravity is a force not energy....
Live well
Enjoy life!
-Ben D