Aim of the Giglio Island photovoltaic pilot plant is to experiment powering of two typical island utility services by means of a source fully independent from mainland. A cold store cell will allow conditioned storage of food, providing longer autonomy from mainland while the ozonizer system will increase availability of good water by treating water coming from wells. The specific design includes the development of two approaches for power conditioning of the two autonomous load branches ( Cold Store and Ozonizer).