I use a 2x3 LP boiler, with a hobbyist engine to power my treefarm, the output of which I pump into barrels. The wood has a diamond pipe passing it into a powered furnace, outputting into the boiler. When the boiler is full, and the furnace is full, all excess wood goes into barrels. The furnace is powered by another hobbyist engine, and the excess steam is used by 4 commercial engines to power my rudimentary processing setup, lasers when needed, charge the energy units, and, recently, destill the saplings into biofuel, to be put in an iron tank. This is useful, as it's essentially getting free-transportable energy from the setup that can either power quarries or IC2 power, when I set it up.