"Soldier Portable Energy Reserve PACK". Design and propose a system capable of dealing with multiple power sources and managing the distribution of energy from these different sources to multiple equipments in an intelligent way. SPER-PACK is a project integrated in EDA’s CEDS-FSP (Combat Equipment for the Dismounted Soldier – Feasibility Study Programme). The objectives of this project are to assess different technologies for energy generation, storage and management based on the operational environment, user profiles and other constraints (including for example, energy and power density, acoustic and heat signatures) and to propose a preliminary design of a flexible, plug-and-play power supply system for the dismounted soldier.