Method for distributed electrical power determination for at least one load that is connected to a voltage source via a voltage path, wherein a voltage measuring device determines a supply voltage of the voltage source at a voltage measuring point on the voltage path, and wherein at least one current measuring device determines a load current of the load at a current measuring point on the voltage path, comprising the method steps: recording voltage measured values of the supply voltage by way of the voltage measuring device to determine a voltage profile of the supply voltage in a voltage measuring step; recording current measured values of a load current of the at least one load by way of the at least one current measuring device to determine a current profile of the load current in a current measuring step; characterized by analysing the voltage measured values of the supply voltage and/or the current measured values of the load current with an analysis function and determining voltage characteristic variables (AFPU) of the voltage profile of the supply voltage and/or current characteristic variables (AFPI) of the current profile of the load current in an analysis step, wherein the analysis of the voltage measured values of the supply voltage in the analysis step is carried out by the voltage measuring device, and/or wherein the analysis of the current measured values of the load current in the analysis step is carried out by the at least one current measuring device, wherein the analysis function is in the form of a mathematical function, and wherein the voltage characteristic variables (AFPU) and/or the current characteristic variables (AFPI) are parameters of the analysis function; transmitting the voltage characteristic variables (AFPU) to a processor unit by way of the voltage measuring device and/or transmitting the current characteristic variables (AFPI) to the processor unit by way of the at least one current measuring device; and ascertaining at least one power value, taking into consideration the voltage characteristic variables (AFPU) of the voltage profile of the supply voltage and/or the current characteristic variables (AFPI) of the current profile of the load current, by way of the processor unit in a power value ascertainment step. recording voltage measured values of the supply voltage by way of the voltage measuring device to determine a voltage profile of the supply voltage in a voltage measuring step; recording current measured values of a load current of the at least one load by way of the at least one current measuring device to determine a current profile of the load current in a current measuring step; characterized by analysing the voltage measured values of the supply voltage and/or the current measured values of the load current with an analysis function and determining voltage characteristic variables (AFPU) of the voltage profile of the supply voltage and/or current characteristic variables (AFPI) of the current profile of the load current in an analysis step, wherein the analysis of the voltage measured values of the supply voltage in the analysis step is carried out by the voltage measuring device, and/or wherein the analysis of the current measured values of the load current in the analysis step is carried out by the at least one current measuring device, wherein the analysis function is in the form of a mathematical function, and wherein the voltage characteristic variables (AFPU) and/or the current characteristic variables (AFPI) are parameters of the analysis function; transmitting the voltage characteristic variables (AFPU) to a processor unit by way of the voltage measuring device and/or transmitting the current characteristic variables (AFPI) to the processor unit by way of the at least one current measuring device; and ascertaining at least one power value, taking into consideration the voltage characteristic variables (AFPU) of the voltage profile of the supply voltage and/or the current characteristic variables (AFPI) of the current profile of the load current, by way of the processor unit in a power value ascertainment step.