Most marine technologies (apart from wind) are not yet proven commercially. However, with continued political support for renewable energy as a source of clean, secure and reliable energy, technologies are expected to develop in the coming decade, and to become increasingly attractive and cost-competitive. A combination of significant available resource (including wind, wave, tidal stream and range), high energy demand and the resulting large scale of potential development has led to a highly market-driven approach to MRE in these countries. Such growth and expansion of the renewable energy sector has been politically attractive for countries trying both to recover from financial crises through the development of infrastructure projects and associated industry and to address renewable energy targets.