I have access to this decorative windmill. It’s been in place for decades, spins freely in the wind, and has made millions of revolutions in its lifetime. Its RPM’s are impressive even in relatively low wind.
What are your thoughts on how I should harness this energy?
Ok - so just attach the dynamo then.
yep :-) but that small dinky wheel will have trouble powering anything more than a bunch of Leds - there’s not enough momentum in those blades, they would have to be longer, less of them and higher up to use more area where wind is blowing stronger and constantly to provide a solid amount of power.