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 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 (222, 224) 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 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 (222, 224) 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.