Method for taking into account energy intensity of data transmissions between a user equipment and a telecommunications network, the telecommunications network comprising an access network, wherein the user equipment is, at least temporarily, in communication exchange with the telecommunications network using radio resources of an air interface between the user equipment and the access network such that a plurality of radio access technologies and/or a plurality of radio signal transmission schemes are able to be used for transmitting uplink data - from the user equipment towards the access network - and/or downlink data - from the access network towards the user equipment -, the plurality of radio access technologies and/or the plurality of radio signal transmission schemes being associated with or related to a first, lower level of energy intensity or at least a second, higher level of energy intensity, wherein the user equipment comprises an energy priority information, wherein, in order to take into account the energy intensity of such data transmissions between the user equipment and the telecommunications network, the method comprises the following steps: -- in a first step, the user equipment receives, from the telecommunications network or from a dedicated network node thereof, at least one energy intensity indication, the at least one energy intensity indication being related to at least one radio access technology and/or at least one radio signal transmission scheme for transmitting uplink data and/or for receiving downlink data, -- in a second step, subsequent to the first step, at least one radio access technology and/or at least one radio signal transmission scheme is selected by the user equipment in dependency of the energy intensity indication and the energy priority information, wherein the at least one energy intensity indication refers to the energy intensity of data transmissions between the user equipment and the telecommunications network in terms of one or a plurality of the following measures of energy intensity: -- the energy used per data volume transmitted, such as a value of Joules required per Mbyte transmitted, -- the energy used per bandwidth used, such as a value of Joules required per bandwidth, especially in Mbit per seconds, applied, -- the energy used per latency realized, such as a value of Joules required per archiving a latency expressed in milliseconds. wherein the user equipment is, at least temporarily, in communication exchange with the telecommunications network using radio resources of an air interface between the user equipment and the access network such that a plurality of radio access technologies and/or a plurality of radio signal transmission schemes are able to be used for transmitting uplink data - from the user equipment towards the access network - and/or downlink data - from the access network towards the user equipment -, the plurality of radio access technologies and/or the plurality of radio signal transmission schemes being associated with or related to a first, lower level of energy intensity or at least a second, higher level of energy intensity, wherein the user equipment comprises an energy priority information, wherein, in order to take into account the energy intensity of such data transmissions between the user equipment and the telecommunications network, the method comprises the following steps: -- in a first step, the user equipment receives, from the telecommunications network or from a dedicated network node thereof, at least one energy intensity indication, the at least one energy intensity indication being related to at least one radio access technology and/or at least one radio signal transmission scheme for transmitting uplink data and/or for receiving downlink data, -- in a second step, subsequent to the first step, at least one radio access technology and/or at least one radio signal transmission scheme is selected by the user equipment in dependency of the energy intensity indication and the energy priority information, -- in a first step, the user equipment receives, from the telecommunications network or from a dedicated network node thereof, at least one energy intensity indication, the at least one energy intensity indication being related to at least one radio access technology and/or at least one radio signal transmission scheme for transmitting uplink data and/or for receiving downlink data, -- in a second step, subsequent to the first step, at least one radio access technology and/or at least one radio signal transmission scheme is selected by the user equipment in dependency of the energy intensity indication and the energy priority information, wherein the at least one energy intensity indication refers to the energy intensity of data transmissions between the user equipment and the telecommunications network in terms of one or a plurality of the following measures of energy intensity: -- the energy used per data volume transmitted, such as a value of Joules required per Mbyte transmitted, -- the energy used per bandwidth used, such as a value of Joules required per bandwidth, especially in Mbit per seconds, applied, -- the energy used per latency realized, such as a value of Joules required per archiving a latency expressed in milliseconds. -- the energy used per data volume transmitted, such as a value of Joules required per Mbyte transmitted, -- the energy used per bandwidth used, such as a value of Joules required per bandwidth, especially in Mbit per seconds, applied, -- the energy used per latency realized, such as a value of Joules required per archiving a latency expressed in milliseconds.