Aerospace Research Corporation (ARC) is a manufacturer of renewable energy producing systems using biomass.  Located in Roanoke, VA, the company consists of the most talented energy systems engineers.  With the knowledge that gas turbines are more efficient than steam turbines, the ARC engineers succeeded in using biomass (derived from wood, crop residues, processed solid wastes, etc) in the same manner as a liquid or gaseous fuel to be converted to energy by the gas turbine.