Mechanism for modelling a logistics process

A method of modelling a logistics process (30), which comprises sub-processes (31), at least one cost factor (34) and at least one environmental factor (35), such as energy consumption, being associated with at least one said sub-process. A computer model is created from the logistics process, and at least one sub-model (40) of the computer model models a corresponding sub-process (31) so that the sub-model includes a corresponding cost parameter (44) for each essential cost factor (34) of the sub-process. The sub-model (40) models a corresponding sub-process (31) so that an environmental parameter (45) corresponds to at least one essential environmental factor (35) of the sub-process in the sub-model, and each cost parameter (44) of said at least one sub-model (40) and said at least one environment parameter (45) are commensurate. Reports can be generated on the basis of the computer model which show the influence of changes on the cost factors (34) and the environmental factors (35) and the logistics process (30) can be adjusted so that at least one environmental factor (35) improves.