An arrangement for determining electrical parameters of loads in a branched power network, comprising a centralized voltage transformer unit and a plurality of decentralized units, wherein the centralized voltage transformer unit is designed to record a voltage characteristic and to generate a voltage reference signal reduced to a safety extra-low voltage by a conversion factor proportional to the voltage characteristic and to provide this signal in a transmittable form, wherein the decentralized units are each assigned to the loads, wherein each decentralized unit comprises a decentralized current measurement set-up and a decentralized evaluation unit, wherein the decentralized current measurement set-up comprises at least one current sensor and is designed to measure an instantaneous value of a current and to provide it in a transmittable form, wherein the decentralized evaluation unit is connected to the centralized voltage transformer unit by means of a voltage signal connection and to the respective decentralized current measurement set-ups by means of a current signal connection, wherein the voltage signal connection has a digital voltage signal connection section (8.1) which is delimited by an analogue-to-digital converter (8.2) and a digital-to-analogue converter (8.3), wherein the decentralized evaluation unit is designed to detect instantaneous values of the voltage from the voltage reference signal and to assign the instantaneous values of the voltage to the instantaneous values of the current and to calculate the electrical active power of the respective load as an electrical parameter from the assigned instantaneous values of the voltage and the current and from the conversion factor. comprising a centralized voltage transformer unit and a plurality of decentralized units, wherein the centralized voltage transformer unit is designed to record a voltage characteristic and to generate a voltage reference signal reduced to a safety extra-low voltage by a conversion factor proportional to the voltage characteristic and to provide this signal in a transmittable form, wherein the decentralized units are each assigned to the loads, wherein each decentralized unit comprises a decentralized current measurement set-up and a decentralized evaluation unit, wherein the decentralized current measurement set-up comprises at least one current sensor and is designed to measure an instantaneous value of a current and to provide it in a transmittable form, wherein the decentralized evaluation unit is connected to the centralized voltage transformer unit by means of a voltage signal connection and to the respective decentralized current measurement set-ups by means of a current signal connection, wherein the voltage signal connection has a digital voltage signal connection section (8.1) which is delimited by an analogue-to-digital converter (8.2) and a digital-to-analogue converter (8.3), wherein the decentralized evaluation unit is designed to detect instantaneous values of the voltage from the voltage reference signal and to assign the instantaneous values of the voltage to the instantaneous values of the current and to calculate the electrical active power of the respective load as an electrical parameter from the assigned instantaneous values of the voltage and the current and from the conversion factor.