(09-12-2013, 08:28 PM)primordial abyss Wrote: Looks cheap to build.One of those steel I-beams is probably close to $750. My guess is that the materials cost alone is at least $200,000. They are not playing around.
I'm gonna guess cost was $750K-$1M for the materials, machining, and construction.
The machine is said to deliver 30kW. At $.15 a kW/h from the grid, that's $40K/year. So it would take about 20 years for it to pay for itself, unless the generated electricity could be sold.