Wind powered generators are a pretty clean source of electricty. Though they take some significant resources to create, once they are built they will only require routine maintenance, though you are correct, they only generate electricity if there is wind.
Natural gas must be burned to run electric generators, which only adds to the large number of unnatural gasses in the atmosphere. Though it may generate electricity, its only going to compund other problems.
I think nuclear energy is a really cool idea, but what do we do with the nuclear waste? I think right now its just being stored in concrete tanks. Also, events like Chernobyl remind us how dangerous this kind of power generation can be.
Personally, I think the concept of green energy is misleading and incorrect. Energy cannot be created nor destroyed, it has to come from somewhere and it has to go somewhere. The green energy debate only talks about where we are taking this energy from, but I think we also need to look at where it's going.
In my opinion, almost everyone wastes electrical power on a daily basis- I do it all the time, though I'm trying to get better
If we all changed our lifestyles a bit, maybe we could get by on the energy generators we already have. I feel that the green energy initiative is using extra resources and emitting extra pollution to get rid of the resource using and pollution creating energy sources we already have.