So, never. :-)
You should learn a little physics.
Here is a great non-profit online teaching site, I use it to brush up on my math skills but they have a basic course on physics:
https://www.khanacademy.org/science/physics
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Dear One, humbly I say to You, You are talking to a tested genius that has studied physics, and many aspects thereof I add, psychology, economics, history, and more in My 63 years here. So... Yeah.
Then you should obviously know that there is no such thing as free energy technology. Unless you received a very poor education. So...yeah.
Actually, it is Most who do not have the education I have on that score. We swim in a sea of energy - electro-gravito-magnetic energy, the aether, the field that pervades the universe.. And there are ways to extract energy from from it. But these are all hidden and suppressed.
You: video
Me:
Pearls before swine. Do have a nice life.