Energy storage systems for buildings equipped with photovoltaic cells

Concerns about the climatic changes and the growing demand for energy represent a trend and important reasons to trigger worldwide intensified searches for suitable green energy sources. For residential and small buildings applications, solar and wind power energy hold a high potential and they may become, in our opinion, the main renewable clean energy resources in the future. For each application renewable based there are different kind of energy storage systems able to accomplish specific characteristics. The development of such kind of energy systems represents nowadays a technical challenge market oriented. In this paper will be presented different kind of energy storage solutions, suitable to be used in association with renewables sources, in order to supply the electricity requested by consumers of residential or small stand-alone or hybrid buildings placed on isolated areas.