Opportunities for tidal current and in-stream energy conversion technologies

Over the last four or five years, much effort and considerable resources have been allocated to tidal current energy technology R&D. The technology is still at an early stage of development, with companies and research institutions focused on economically and technically feasible solutions. However, with increased support from governments, private investors andelectric utilities, tidal current power is showing every promise of becoming an acceptable form of renewable energy which meets the environmental and commercial criteria of the market place. Development opportunities and challenges worldwide are discussed here, with suggestions on how to manage issues which may arise. The application of small-scale tidal energy technologies to assist with electrification of remote coastal communities is proposed.