This report presents case studies of five chipping operations for roadside residues. Four different models of chipper were evaluated: the Bruks 1001 CT and 1000 CT mobile chipper-forwarders and the Nicholson WFP 3A and Erjo 120 HM 903 trailer-mounted chippers. The chippers were evaluated to determine the productivity, costs and operational constraints of recovering roadside residues for energy. The studies were conducted at Port-Cartier, Quebec; at Plaster Rock and Newcastle, New Brunswick; and in the Washington District of Maine, U.S.A.