Wave energy is reaching a critical stage, following over three decades of intensive research and development. The first few full-scale prototypes have been tested at sea and the first pre-commercial orders were placed. The first offshore wave farm is to be installed in the near future and it is likely that similar schemes will shortly follow. Such projects will in the medium term provide a comparable output to the conventional wind farms, allowing an alternative approach when trying to ov- come the technological challenge of finding alternative renewable energy sources. It will also fulfil...