Abstract: Embodiments of the present invention provide multiphase electricity meters based on a configurable microprocessor and on a real-time operating system for use in Smart Grid power networks. Hereinafter, said system is referred to as a digital electricity measurement system (DEMS). The DEMS may include a single configurable microprocessor to perform functions of measurement and communication. The single configurable microprocessor is connected via a digital interface IF to analog front-end circuits—AFE: for receiving measurement signals, AFEM: for receiving and transmitting information signals by means of a power line AFEPLC, and/or for generating and receiving a radio signal AFERadio.