This report deals with the technology and economics of various industrial-sized wood energy systems available for generation of steam and/or electricity. The document examines wood fuels; fuel storage; fuel combustion, handling and preparation equipment; wood gasification; retrofit of fossil-fuel boilers; cogeneration; pollution abatement; system economics; and procurement considerations. The report also includes appendices on suppliers of wood energy equipment, a bibliography on wood used as fuel, and a glossary of terms. The report is intended to assist those who are considering using wood energy systems by reviewing the related technology, economics, equipment, and fuel.