With fossil fuel prices likely headed only up in price, demand on local round wood increasing, and transportation costs also increasing, a multi-fuel gasification boiler makes increasing sense. Setting aside the combustion control aspects and engineering issues, competition in fuel choice is likely also to be of increasing importance, and multi-fuel helps to address this for the individual. Any boiler with metered fueling (pellet, corn, etc.) has the great advantage of not needing daily attention, if everything works. A round wood boiler has the current great advantage of the lowest fuel cost. Maybe this is too wild, but what might make an entrepreneurial adventure would be a "small" grinder/pellet mill, operating perhaps off the PTO of a tractor, to provide a ready supply of pellets for local markets from available round wood. This marries the sweet spots of low round wood price and low transportation cost. The economics could be impressive. A quick scan of pellet prices shows $155 low and $229 high per ton cost. This compares to red oak cords of seasoned round wood at $271 to $400 per cord. Aspen has about 60% of the heat value of oak per pound, so this also compares to $162 to $240 per cord. Obviously a lot more is involved, but just a thought.