METHODS FOR REPORTING ENERGY EVENTS

The disclosure relates to a 5G or 6G communication system for supporting a higher data transmission rate. A method, performed by a Policy Charging Function (PCF), comprising: transmitting, to a Session Management Function (SMF), an energy policy related to energy credit controlling, receiving, from the SMF, an event notification; and, transmitting, to an Application Function (AF), the event notification, wherein the policy is transmitted from the PCF to Online Charging System (OCS) via the SMF, wherein the event notification is triggered at the OCS and transmitted from the OCS to the PCF via the SMF in case that the OCS identifies AMF SMF that the policy includes energy control policy and aggregate energy cost is larger than energy credit limit based on the policy.