SES determines the investment and operation strategies that minimize the total annual cost, given the end-use energy demand; the efficiency and costs of the conversion technologies; and the availability and costs of the energy resources. SES represents the main energy demands: electricity, heating and mobility. SES is a snapshot model, that is, it models the energy system in a target year and it does not make any statements on the trajectory to reach this future state. The target year is modelled with an hourly resolution that allows us to represent the intra-day variations of the energy demand and resource availability.