Ok, I'm always on a mission to figure out how to get power, and my latest scheme is extremely low tech, but before I build a prototype I need to do some more research. I need to find the most effecient power producing thermocouple (peltier) . But I dont know if there is a specific type or style of pelt that is better at producing energy. I'd like something that is at least capable of dishing out a few watts, without a huge temp differential. At one point I had a 80watt TEC, and I had one side in ice water, and the other side on a hotplate, A spread of over 80C! and it only produced a fraction of a watt, and virtually NO amps. This leads me to believe that the type of TEC i had, was not suitable for generation power. what criteria do I need to look for? If anyone is really interested I can fill you in on my plan, its really simplistic. but I figured I'd prefer not bore you yet. Thanks!