I started with a question, Why cant we generate the electricity for the greenhouse and use the "waste" heat to heat the greenhouse? It looks like we can. I have been working on an idea of using a pellet stove to heat the greenhouse. I didnt like the idea that it required electricity to run the stove. I asked why cant the stove generate its own electricity? I found out that it can, but the manufacturers believe that it is too cost prohibitive. So I have been researching my own means of accomplishing this goal. I have settled on two possibilities and I have an engineer helping me with both. We are looking at either a Stirling engine, or a steam engine. Both can generate ample power to run the stove as well as probably enough to run all the greenhouse operations. I also like the idea that I can make my own fuel for the stove using a hammer mill to grind up the material and a pellet mill to produce the pellets. The pellets can be made of almost any bio-mass. I have seven forested acres which provides tons of windfall waste for making fuel. Our goal is to have a proto-type up and running this winter. I am eager to hear your thoughts, ideas, and input. Thanks.