Mobile loader crane , comprising: a column structure ; a boom which is telescopic, connected to the column structure by articulation, and configured to move up and down; a turning device , on which the column structure is mounted and which is configured to swivel the column structure and the boom together in two lateral directions, around a substantially vertical direction (X) and said turning device is further mounted on a frame structure , at least two movable outriggers which can be placed against the ground or a floor and which are configured to support and stabilize the crane ; a control system which is configured to control the functions of the crane and which comprises at least one control device , by which an operator may manually control the functions of the crane ; at least one power source apparatus for generating the power needed by the functions of the crane ; the crane further comprises: a crawler frame for moving the crane and comprising a frame structure and motorized first and second crawler tracks placed on opposite sides of the frame structure; and in which crane the turning device is further mounted on the frame structure of the crawler frame, and the above-mentioned outriggers are connected to the frame structure of the crawler frame; and a counterweight arrangement connected to the column structure , wherein the counterweight arrangement is configured to swivel together with the column structure and the boom and is further suitable for acting as a counterweight for the boom and/or for loads to be connected to or suspended from the boom characterized in that : at least one of said power source apparatuses is placed in the counterweight arrangement ; and said power source apparatus comprises either an electric motor or a combustion engine, or both, for generating the power needed for the functions of the crane . a column structure ; a boom which is telescopic, connected to the column structure by articulation, and configured to move up and down; a turning device , on which the column structure is mounted and which is configured to swivel the column structure and the boom together in two lateral directions, around a substantially vertical direction (X) and said turning device is further mounted on a frame structure , at least two movable outriggers which can be placed against the ground or a floor and which are configured to support and stabilize the crane ; a control system which is configured to control the functions of the crane and which comprises at least one control device , by which an operator may manually control the functions of the crane ; at least one power source apparatus for generating the power needed by the functions of the crane ; the crane further comprises: a crawler frame for moving the crane and comprising a frame structure and motorized first and second crawler tracks placed on opposite sides of the frame structure; and in which crane the turning device is further mounted on the frame structure of the crawler frame, and the above-mentioned outriggers are connected to the frame structure of the crawler frame; and a counterweight arrangement connected to the column structure , wherein the counterweight arrangement is configured to swivel together with the column structure and the boom and is further suitable for acting as a counterweight for the boom and/or for loads to be connected to or suspended from the boom characterized in that : at least one of said power source apparatuses is placed in the counterweight arrangement ; and said power source apparatus comprises either an electric motor or a combustion engine, or both, for generating the power needed for the functions of the crane . <EOS>