Renewable energy and Sardinian coastal areas: market and environ-mental issues

The role of renewable energy sources is changing as they are set to replace fossil sources to accomplish the energy requirements in the next future. The direction is set, and energy planners specified quite close dates when to achieve important shares in energy production portfolio by renewables. After considering the meaning of energy communities in the development of renewable sources in a bottom-up perspective, the prediction of vertical axis wind turbines performance is presented to focus the attention on this configuration which is not full commercial TLR as well. The wave energy converters are another example of devices to exploit renewable sources which are gaining a special interest. An application concerning Sardinian coastal areas is presented and some results concerning its energy performance is discussed