Wood chips are wood reduced to flakes, ranging in size from a few millimeters to a few centimeters. It is produced by cutting logs and twigs through the chipper, using waste from agricultural, forestry or dedicated crops (short rotation). It is an excellent biofuel for natural and / or industrial processes.
Like other ligno-cellulosic biomasses, it cannot be considered in itself a renewable source due to the long formation and growth times of the original plant. However, wood chips can be the raw material for the growth of the original plant species in a closed cycle. A necessary condition for renewability is that the withdrawal from the source does not exceed the growth of the same.