first of all if you have the knowledge to build a device to produce energy.  Electricity, for example. You need money to build this generator. In other words, this free energy has a price. Also the whole machinery needs spare parts. If you make a small machine and it does not produce enough energy for you, you threw the money out the window. You get to appreciate that you paid a very high price to get this .....free energy.
There is someone here who has faced with such problems ? I ask because these are real problems. I know these issues personally because I faced them. If we make the exception of the initial investment in the construction of such machinery and also do not take into account the spare parts and maintenance, yes, we can say that we have free energy. TYhis kind of free energy exists. I can produce such a system at any time but it costs me money that I don't have and if I had it, I would spend it different. The funny thing is that there are a lot of different solutions to this problem. I know two. sorry for my english...I read your posts and I hope some of you are right but ...... you have to think that  free energy solutions and mechanisms have been around for thousands of years.I did not invent anything, I only made links between things known for thousands of years.
I ask you all and I kindly ask you to answer me. What amount of money you would be willing to pay for a 10kw power generator that once started up only stops when a piece is broken from some reason. Zero polution offcourse. I think 10-20 years will be no need for spare parts.