While still in experimental phases, torrefaction produces a substance similar to coal, and is also energy intensive to produce. (sourcewatch.org)
Our renewable energy team has extensive knowledge in biomass power facilities, including woody biomass boiler - fired and gasification plants, municipal waste - to - energy plants, biofuels plants, anaerobic digestion plants, biomass pelletization or torrefaction plants, and coal - to - biomass conversion facilities. (iea.net)
PGE is said to be considering if it can replace all of the millions of tons of coal it burns every year at Boardman with plant based material that has been pre-treated through a process called torrefaction. (sourcewatch.org)