Abstract: A method for controlling energy consumption of a field device of automation technology, comprises determining a minimum available total power for the field device; dividing the minimum available total power among individual modules of the field device in accordance with maximum allowable power requirements for the modules; determining an actual, current power requirement for at least one module; ascertaining a power difference between the maximum allowable power requirement determined for the at least one module and the actually current power requirement of the at least one module; controlling the at least one control component of the at least one module as a function of the ascertained power difference, so that the power difference is minimized, especially becomes zero and the at least one module utilizes the maximum allowable power requirement for such module.