Certification can help reduce actual and perceived risks of the technologies in terms of performance and structural integrity, and thus helps to attract commercial financing and facilitate international trade. 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. This was also one of the main recommendations from the Ocean Energy Forum Strategic Roadmap . In order to create a valuable and robust system, it is important that it is applied in the real world and feedback from experience is given back to the groups developing the specification and certification schemes. After presenting the MET-CERTIFIED project, we recall the process of standardisation and certification. Then we present the main results obtained during the first years of the project.