Reducing energy consumption is at the core of many researches over the last decades. These researches are motivated by an increasing awareness of the environmental situation and by the economical aspect of energy savings. Companies in possession of large production site like Volvo increase their productivity through the usage of automated lines of production.

This thesis outline how energy savings can be achieved for mobile devices like a gantry crane. A workflow analysis of a production line has been achieved, this analysis resulted in a route modification for the gantry crane without altering the production rate of the line and saving energy at the same time. After adapting the route of the gantry crane, a mapping of the production in function of the velocity and acceleration of the gantry was conducted.

By studying the impact of the gantry crane velocity on the energy consumption, the previous mapping lead to adjusted values of speed and acceleration for the gantry crane carriage. A new route and velocity values for the gantry crane were found and at the same time keeping the production rate unchanged and therefore ensuring a profitable scenario for the company and the environment.