A system for electric system failure detection and localisation in a datacenter comprises a plurality of power distribution units (PDUs), each of the plurality of PDUs comprising a plurality of electric power outlets and is configured to sense one or more power parameters relating to each of its electric power outlets, generate electric system operating data, and, upon receipt of a request, transmit of the electric system operating data to a networking device. A plurality of communicating circuit-breakers, connected to the plurality of PDUs, emits status signals. The networking device, communicably connected to the plurality of PDUs via a first datalink and to the plurality of communicating circuit-breakers via a second datalink, is configured to detect and locate an electric system failure based on the electric system operating data and the status signals. A method for electric system failure detection and localisation in a datacenter is also provided.