Launched in October 2011 this project involved Black & Veatch, in collaboration with HR Wallingford and the University of Edinburgh to develop a model of the UK Continental Shelf and North European Waters, 100 times more accurate than existing marine data. This has been used to assess the tidal energy potential around the UK (tidal range and tidal streams), to informThe design of energy harnessing schemes, to assess their interactions, and to evaluate their impact on European coasts. It can also be used to renew and inform flood defences, coastal erosion and aggregate extraction. Now completed,The project has been launched to market under the brand of SMARTtide. This is available to the marine industry under licence from HR Wallingford.The TRM project has developed and verified a set of modelling tools, and performed an initial analysis of the impact of energy extraction at various potential tidal range and tidal stream energy extraction sites from 2020 to 2050. This document describes the methodologies used to interface the Continental Shelf Model (CSM) with detailed local model(s) that represent the tidal range energy schemes in detail.The document should be used by modellers to integrate a standalone model into the CSM. This report forms part of the D08 deliverables