Most of issues today that nature can face are the gas emissions that contribute in a severe manner to the climate change and then the global warming and desertification. This is about systems and products that do not respect nature. The end-of-life (EoL) disassembly of mechatronic systems such as ships and vehicles consumes a great deal of time and energy. The evaluation of disassembly plans based on the dissipated energy enables an optimum solution and preserves the environment. This paper presents a green approach based on the evaluation of EoL disassembly plans. The evaluation is based on the energy consumed during the dismounting of parts or subsets. A mathematical formulation of the consumed energy during the dismounting operation is developed. An illustrative example is implemented to emphasize the advantages and limitations of the proposed methodology.