Certification can help to reduce perceived risks of marine energy technologies in terms of performance and structural integrity, and thus helps to attract commercial financing and make export easier. At present, a certification scheme for marine energy convertor is under development by the International Electrotechnical Commission (IEC) involving all stakeholders in a consistent way based on international consensus. The implementation of international standards and certification schemes are needed to accelerate marine energy technologies development. In order to improve the work already achieved and to propose adaptations and enhancement, four experimental trials are undertaken on different kind of tidal energy devices (fixed and floating horizontal axis turbine as well as undulating membrane) under the Interreg 2 Seas Met-Certified project. The first results obtained under this project in the wave and current flume tank of Ifremer are presented. The experimental set-up and protocol trials, taking into account the actual best practices and guidelines, are presented.