Resource metering system and method using such a system for smart energy consumption

The resource metering system comprises: an end-point device (25) consuming a resource, in particular for usage in a building (2) or in an outdoor lighting system, said device comprising a detection unit that produces status information and an indicator of usefulness; a smart meter (20) comprising: a communication circuitry provided with an interface adapted for receiving from said device status information and said indicator of usefulness; a metrology device connected to a medium (17) that provides the resource to said device; and a control circuitry connected to the metrology device for collecting resource consumption data, the control circuitry being connected to the communication circuitry and adapted to produce monitoring data to be securely transmitted to a server (10) after processing the status information and said indicator. Monitoring data are used when determining consumption tariffs, so as to encourage energy efficient usage of the device.