Abstract: A closed loop biomass energy system includes at least one agricultural facility that produces agricultural waste; a waste processing system operable to convert the waste into biomass; a wastewater treatment system operable to treat wastewater created by the waste processing system and an energy production system operable to utilize the biomass to produce energy and provide the energy to an energy end-user. In one form, the energy is steam and the energy end-user is a biofuel production facility that utilizes the steam to power production of a biofuel. In a further aspect of this form, wastewater created as a byproduct of the biofuel production is transferred to and treated by the wastewater treatment system. However, additional forms, embodiments, features and aspects are contemplated as discussed in further detail in this document.