eTRANSPORT is an energy model developed to provide support for the planning of local or regional integrated energy distribution systems. It is a deterministic linear model, and describes in sufficient detail the various types of technical components of an energy system.The model determines the cheapest way - from a socio-economic point of view - to satisfy end-use energy demand. eTRANSPORT is flexible, in that it is applicable to relatively small systems (local/municipal regional), but it can be extended to large systems as well. It can be used for short-term operation planning, but also for long-term (investment) analyses. In analyses using this model, uncertainty can be taken into account by simulating scenarios using forecasted values of various important parameters (energy costs, prices, demand levels, etc.).