I've only been studying this system for a couple of weeks but would greatly appreciate any feedback that's available on my little idea... Being Scottish, of course I'm trying to find multiple uses for the rocket mass heater - as if it's not already amazing enough! Having seen someone successfully attach a thermo-syphon by coiling copper and laying it on top of the barrel, would it not be possible with the ingoing cold water and the outgoing hot water, to attach the thermo-electric gizmo so that cold and hot could run through it on either side, safely generating power without burning out any of the components? The only thing you'd have to ensure is that the coil could be removed when hot water started reaching the bottom of the water barrel. Since you only have to run the rocket 2-3 hours/day, perhaps you wouldn't even have to do that, as you'd naturally just let the flames go out and the whole process would stop. Meanwhile, you've charged all your batteries and can start the whole process again the next day. Am I crazy or is this even remotely possible?