Six quantitative energy models and two appraisal techniques are being developed in the Realising Transition Pathways (RTP) project. All these models and techniques address the UK power system transition until 2050, but differ in their disciplinary perspective, objectives, methodological approaches and parts of the power system addressed. This working paper aims to compare these models to each other in order to facilitate interdisciplinary learning among the models and their developers. First, the RTP models are mapped out in order to understand their overlays and differences. Second, by means of running the models with harmonised assumptions of the “Central Co-ordination” transition pathway, converging and diverging insights of these models are identified. In this way, areas for further development of the models are suggested. This report describes the process and outcomes of this multi-model analysis.