specific morphologies and mechanical conditions comparably higher than those of piezo-ceramics were identified [14; 15]. In order to demonstrate the ability of the porous piezoelectric polymers in a harsh environment, [PERSON] et al. [16] fabricated PET/EVA/PET laminated films and ionized them by a corona charging method. The longitudinal piezoelectric coefficient of the developed generator reached \(\sim\)6300 pC/N. [PERSON] et al. [15] showed energy harvesting applications with this type of cellular material based on piezolectret fluorocarbon polymers with a power collected value up to 109 W [16]. [PERSON] et al. [17] examined air-spaced cantilevers elaborated from a PDMS porous piezoelectric material for energy harvesting applications. For frequencies ranging from 5 Hz to 200 Hz, the output power reached a maximum of 136 nW and remained stable at 103 nW. Different procedures, techniques and methods have been developed and used in order to prepare the porous polymers, e.g., compression molding [18], extrusion [19; 20], injection [21], solvent casting [22], tape casting [23], and spin coating [24]. Void content creation techniques provide opportunities to fabricate advanced polymers with greater physical proprieties and controlled volume as a function of porosity fraction [25]. The porous piezoelectric ceramics mainly suffer from low mechanical proprieties, high cost for preparation and limited application fields [26]. Porous piezoelectric polymers can be described as particles that contain void or gas by a coating or shell and have diameters in the 1-1000 \(\upmu\)m range [27]. Commercial uses for this type of material include functional textiles, adhesives, cosmetics, medicines, and other medical applications [28; 29]. Physical methods, chemical methods, and physico-chemical methods are the three strategies used to create porous polymers [30; 31; 32]. The physical methods contain techniques such as spray cooling, spray drying and fluidized bed processes, and the chemical methods contain in situ polymerization and the solvent extraction/evaporation method. The physico-chemical methods contain simple and complex methods as well as sol gel technology. After the elaboration step of polymer foams, gas ionization is an important step to create the pseudo piezoelectric effect [33; 34; 35; 36; 37]. Starting with a polymer film with embedded air cells, internal charging of air can be carried out through electrical ionization [38]. When a large electric field is applied across the film, gas molecules in the cells become ionized and opposite charges are accelerated and implanted on each side of the cells, depending on the applied electric field direction [39; 40; 41]. Such artificially embedded dipoles respond externally to an applied electrical field or mechanical force similar to piezoelectric material [42]. Porous piezoelectric polymers are also extremely flexible, making them ideal candidates for mechanical energy harvesters [43]. In this field, commercially available poly(ethylene-co-vinyl acetate) (EVA) could be of great interest, with an intrinsic low modulus and high flexibility similar to elastomeric materials [44]. The EVA matrix shows a high compatibility with pores, making them an excellent candidate for incorporation of electrical macro-dipoles [45]. In order to achieve the above-mentioned purpose, our prior studies have been performed on EVA porous piezoelectric polymers [46]. SEM analysis has been realized to determine the homogeneity of gas cells' distribution in the EVA matrix. A good distribution of cells/voids in the EVA matrix has been obtained for all fabricated films. Various means of increasing the intrinsic characteristics of the copolymers were also studied and demonstrated the simplicity and advantage of working in the pseudo-piezoelectric effect. To continue in the same research area, the objective of this study is to evaluate the energy harvesting by EVA porous polymers in order to increase the conversion abilities of porous piezoelectric polymers.