A system comprising: an ORC container; and an aggregate container comprising an aggregate which generates heat during operation, the aggregate container comprising a heat extraction device (71, 72) for discharging heat from the aggregate container; wherein the ORC container comprises: a container, in particular an ISO container, having arranged therein an ORC device for converting heat energy into electrical or mechanical energy, wherein the ORC device comprises a working medium; a heat introduction device (31, 32) provided at the container and used for supplying heat energy from the aggregate container; and a spacer device arranged on the container, wherein the spacer device is suitable for providing an intermediate space between the ORC container and the aggregate container; wherein the spacer device comprises a stand device for installing the ORC container on the aggregate container, whereby the intermediate space between a lower surface of the ORC container and an upper surface of the aggregate container is provided; and wherein the heat introduction device comprises an exhaust gas inlet for supplying a heat-carrying exhaust gas to an exhaust gas heat exchanger of the ORC device, so as to transfer heat from the exhaust gas directly to the working medium or to a further heat-carrying medium and, subsequently, from the latter to the working medium, in particular for preheating and/or evaporating the working medium, and wherein the ORC container additionally comprises an exhaust gas outlet; and wherein one or a plurality of releasably arranged deflection elements are provided in the intermediate space, so as to lead cooling air of the aggregate away from an area of the ORC container in which a radiator of the ORC device is arranged. an ORC container; and an aggregate container comprising an aggregate which generates heat during operation, the aggregate container comprising a heat extraction device (71, 72) for discharging heat from the aggregate container; wherein the ORC container comprises: a container, in particular an ISO container, having arranged therein an ORC device for converting heat energy into electrical or mechanical energy, wherein the ORC device comprises a working medium; a heat introduction device (31, 32) provided at the container and used for supplying heat energy from the aggregate container; and a spacer device arranged on the container, wherein the spacer device is suitable for providing an intermediate space between the ORC container and the aggregate container; wherein the spacer device comprises a stand device for installing the ORC container on the aggregate container, whereby the intermediate space between a lower surface of the ORC container and an upper surface of the aggregate container is provided; and wherein the heat introduction device comprises an exhaust gas inlet for supplying a heat-carrying exhaust gas to an exhaust gas heat exchanger of the ORC device, so as to transfer heat from the exhaust gas directly to the working medium or to a further heat-carrying medium and, subsequently, from the latter to the working medium, in particular for preheating and/or evaporating the working medium, and wherein the ORC container additionally comprises an exhaust gas outlet; and wherein one or a plurality of releasably arranged deflection elements are provided in the intermediate space, so as to lead cooling air of the aggregate away from an area of the ORC container in which a radiator of the ORC device is arranged. a container, in particular an ISO container, having arranged therein an ORC device for converting heat energy into electrical or mechanical energy, wherein the ORC device comprises a working medium; a heat introduction device (31, 32) provided at the container and used for supplying heat energy from the aggregate container; and a spacer device arranged on the container, wherein the spacer device is suitable for providing an intermediate space between the ORC container and the aggregate container; wherein the spacer device comprises a stand device for installing the ORC container on the aggregate container, whereby the intermediate space between a lower surface of the ORC container and an upper surface of the aggregate container is provided; and wherein the heat introduction device comprises an exhaust gas inlet for supplying a heat-carrying exhaust gas to an exhaust gas heat exchanger of the ORC device, so as to transfer heat from the exhaust gas directly to the working medium or to a further heat-carrying medium and, subsequently, from the latter to the working medium, in particular for preheating and/or evaporating the working medium, and wherein the ORC container additionally comprises an exhaust gas outlet; and wherein one or a plurality of releasably arranged deflection elements are provided in the intermediate space, so as to lead cooling air of the aggregate away from an area of the ORC container in which a radiator of the ORC device is arranged.