Reply #16: Speaking of that:

[phantom power]

The machinery inside the prototypes uses more energy than they presently produce. So Mr Orosz is bench-testing pumps and condensers from a host of automotive suppliers. He's looking for a combination of components that will produce enough surplus energy to make the system pay.

So, this isn't even a real system yet. And I mean that thermodynamically, not economically. He hasn't even demonstrated a system that produces net energy. (even when the sun is shining). So any claims about cost are essentially vapor. He doesn't have a working design, much less a manufacturing cost.

Christ on a pogo stick. I shouldn't even have wasted my time.