Method for assisting an energy consumption optimization of an industrial plant site

An apparatus for assisting an energy consumption optimization of an industrial plant site, wherein the industrial plant site comprises a plurality of sensors comprising mass flow and temperature sensors providing time series data, wherein the apparatus comprises one or more processors configured for:

• receiving time series data from the plurality of sensors, wherein the time series data of a sensor comprises a tag identifying the sensor and a time sequence of measurements performed by the sensor,
• receiving a graph database plant model associated with the industrial plant site, wherein the graph database plant model is formed by a graph database comprising operation nodes related to operation assets of the industrial plant site, transport nodes related to a mass transport between operation assets and sensor nodes related to sensors of the industrial plant site, wherein the edges of the graph database are indicative of the relation between the different nodes of a graph database model,
• determining a waste heat and/or heat sink potential for at least a part of the industrial plant site based on the graph database plant model and the time series data of the sensors, and
• providing control signals based on the waste heat and/or heat sink potential for optimizing an energy consumption of the industrial plant.