Anyone here had any experience with the FreeWatt system? For those who don't know what it is, check out http://www.climate-energy.com/micro-chp.asp It basicly is a piggy-back to your heating system, but while it generates heat for your home, it also generates electricity. I am really interested, since there are nice tax credits and with common 5-year break even point it sounds like a good way to get more energy efficient. I actually seen this system in action, but not in a home. Hence that is why I would love to get some feedback from actual owners or installers.