One of the key developments of the marine energy industry in the UK is the demonstration of near commercial scale devices in real sea conditions and the collection of performance and environmental data to inform permitting and licensing processes.The ETI’s ReDAPT (Reliable Data Acquisition Platform for Tidal) project saw an innovative 1MW buoyant tidal generator installed at the European Marine Energy Centre (EMEC) in Orkney in January 2013.The project demonstrated the performance of the tidal generator in different operational conditions, aiming to increase public and industry confidence in tidal turbine technologies by providing a wide range of environmental impact and performance information, as well as demonstrating a new, reliable turbine design This presentation describes the work of ReDAPT Work Package MC8, delivering a draft certification standard, bringing a harmonised approach to the industry.The scope included conclusion of a Service Specification (DNVGL-SE-0163), with the certification requirements and procedures, and a Standard (DNVGL-ST-0164) with all technical content. It covers:The background on the standardThe challengesStandard scopeRisk and Technology QualificationThe risk based method for the generic tidal turbineMain featuresThe Service Specification for Certification of Tidal Turbine and ArraysConclusions and future developments