Biomass can be directly fired in dedicated boilers. However, cofiring biomass and coal has techni- cal, economical, and environmental advantages over the other options. Cofiring biomass with coal, in comparison with single coal firing, helps reduce the total emissions per unit energy produced. The oldest of all fuels, wood (or biomass), and the old original fuel of the industrial revolution, coal, are key to this move to a new mission. Technical issues that can lead to doubt about of biomass cofiring with coal are being resolved through testing and experience [6].