Study and development of high voltage energy harvesting and storage power-pack for indoor application The last decades have been characterized by a massive population growth which induced a global increase in energy demand. As a matter of fact, energy supply plays a great role in ensuring us a good quality of life. Until now fossil fuels have covered most of our energy needs, but this trend cannot go on for a long time yet. In fact, fossil resources progressive extinction and their dramatic environmental impact, combined with nuclear power safety and waste management concerns, have led to a widespread interest in renewable energies exploitation.