Pellet production is an energy-intensive process; however, the ends justify the means The hammer mill and pellet mill no matter cheap or expensive, demand high-energy inputs, which usually mean they require a three-phase electricity supply. Three-phase supply is only normally found in farming and industrial locations. However, many locations do not have a three-phase supply and installation can be very expensive. Before purchasing the cheap pellet mills that you choose, suitable power requirements must be available. If the installation of three-phase power is impossible for logistic or cost reasons, there are other solutions.