Method, apparatus and computer program product for monitoring energy consumption in an electric vehicle charging network

An apparatus for monitoring energy consumption in an electric vehicle (EV) charging network, wherein the EV charging network comprises multiple EV charging stations each equipped with an energy meter, the apparatus comprising:

• at least one processor, and
• a memory coupled to the at least one processor,
• wherein the memory stores a database comprising old messages from the EV charging stations, each of the old messages comprising a timestamp, a station identifier (ID), a charging session ID unique for each charging session, and an energy meter reading, and the memory further stores processor-executable instructions which, when executed by the at least one processor, cause the at least one processor to:
• a) receive a new message from at least one of the EV charging stations;
• b) store the new message in the database;
• c) check whether the database comprises an older message comprising the same station ID and charging session ID as the new message;
• d) if the older message is present in the database, calculate a time difference and an energy difference between the new message and the older message;
• e) select a time granularity level based on the calculated time difference;
• f) obtain an energy consumption distribution between the timestamps of the new message and the older message based on the time granularity level and the energy difference;
• and
• g) provide the energy consumption distribution to a station operator.