Estimated global potential from marine energy is huge, with unexploited tidal and wave power generation capacities up to 1TW and 80TW’s respectively. In the UK it is estimated that marine energy could be worth as much as ￡6 billion and generate 20,000 jobs by 2035, with some forecasts suggesting the sector could be worth a staggering ￡76 billion by 2050. In this publication, London Research International (LRI) has identified specific tidal and wave energy technologies which are deemed to hold the most potential for utility scale energy production.Company case studies detail the competitive edge of each technology, as well as revealing the size of investment each developer is seeking. The report concludes by summarizing the commercial, investment and technological potential for marine energy in 2014. This report is an invaluable resource for developers and investors seeking to enter the marine energy sector.