This specification describes a method comprising: receiving, by a charging activation apparatus associated with an electric vehicle, a first instance of a charging session ID from first server apparatus associated with a first electricity provider which is the electricity provider of a driver or owner of the electric vehicle; receiving, by the charging activation apparatus, a second instance of the charging session ID from second server apparatus associated with a second electricity provider which is the electricity provider for a power outlet with which the electric vehicle is currently electrically connected; comparing, by the charging activation apparatus, the first and second instances of the charging session ID; and determining, by the charging activation apparatus, if the first and second instances of the charging session ID correspond and, if the first and second instances of the charging session ID are determined to correspond, causing activation of charging of the electric vehicle via the electrical connection to the power outlet.