The limited range of electric vehicles (EVs) is frequently quoted as one of the main impediments to their widespread adoption. One promising technological solution to this is Dynamic Wireless Power Transfer (DWPT) whereby coils within the road surface transfer energy to moving vehicles (providing motive power or charging on-board batteries). This paper reviews what has been suggested as an acceptable range for an EV and then uses published data on DWPT performance to develop a model for estimating how much of a road network needs to be equipped with DWPT technology to satisfy specific range requirements. In one typical “long journey” scenario, approximately 66% of the network would need to be equipped. Other scenarios are presented and sensitivity analysis of the model’s key parameters is explored. Finally, a series of recommendations are made for optimising DWPT provision.