In the past decade, the interest on the multifunctional structure application has grown in a significant manner. The multifunctional structures, aside of load bearing capability, possess multiple functionality included non-structural function [1,2]. The structural power material system [1], so called the energy storing/harvesting structure [2], is targeted in the work presented in this paper. Numerous energy harvesting related articles limited to the small-scale structures have been published in the last few years. Thus, several review articles [3–5] presented the resulting range of power from the order of microwatts to tens of watts. Along with the increase of researches in this area, comes an interest to implement harvesting capability in the larger structures, i.e. bridges, aircraft structures. As an attempt to address this interest, a novel approach to evaluate the potential energy harvesting of a civil jet aircraft structure is presented.