Check out hojo motor dot com. Free power! I searched on CR4. Didn't find any discussion.
You'll have to hurry though, the website could be taken down at any time. (The nasty big utilities hate them for releasing the secret plans, don't cha know.)
Of course, they generate power from a motor. I found that curious.
And they use "perpetual motion." How cool is that?
But anyone can build it in two days.
Unfortunately, I stopped watching after the second "We'll tell you how to order in a few minutes" so I can't tell you how it ends. As if I didn't know ....