Hydrogen energy technology allows to produce electricity from hydrogen and backwards to store largeamount of energy converting electricity into hydrogen, by means of a fuel cell, an electrolyser and a hydrogen storage system. The fuel cell market increased from 24,600 units in 2011 to 78,000 in 2012 offering components with improved converting performances; the expansion of this market and thespread of hydrogen system applications is bringing down the industrial costs of such technology offeringnew opportunities for commercial applications. This paper presents a technology assessment of anhydrogen based energy system for sailboat up to 40 ft. in comparison to traditional electrical accumulators.The object of this paper is to demonstrate the technical feasibility to install a hydrogen based HybridRenewable Energy System (HRES) onboard sailboat in order to improve comfort and safety in a totalenvironmental friendly way by means of the analysis of an innovative system that integrates the renewableenergy produced by PV panels, wind generator and hydro generator together with a hydrogen hydridesenergy storage system, a water electrolyser, a fuel cell and a battery.New regulation and the rising ecological sensibility in Europe need new clean technology to make greenthe European nautical market, the biggest one in the world counting 1.4 yachting boat per 100 inhabitantsin Italy, and up to 2.2 in France.
