Abstract A simple formula was designed to enable firms to determine the least-cost wood residue fuel available from sawmills, veneer plants, chip mills, furniture manufacturers, and other wood products firms in Georgia. Two surveys of more than 250 wood-using firms were conducted during 1980 and 1981 to determine the supply and marketing situation of residues for energy production. Statewide, softwood bark was the least-cost fuel on a delivered basis, followed by softwood shavings, sawdust, and dirty hardwood chips. A market feasibility study for a hypothetical firm in southeast Georgia indicated that softwood bark was the least-cost fuel in that location.