An energy recovery analysis method was developed for the F generation articulated haulers in the form of a MATLAB script. The method is based on the mapping of the peak brake power, brake energy and engine energy. The method was developed using adequate signals collected on haulers at customer sites and test tracks. A conceptual study was also carried out concerning the brake energy that may be stored in the Energy storage systems (ESS) and the results shows the actual amount of brake energy that can be accumulated in the ESS along with the accurate selection of the ESS for a particular work site. The developed method was implemented in a measurement system (M-LOG) and two test runs were made. Results revealed that the energy recovery analysis method was implemented successfully with minor issues. The method developed in this thesis was welcomed by Volvo CE after test run and is in use presently.