EcoCharge is an innovative framework, which combines multiple non-conflicting objectives into an optimization task providing user-defined ranking means through an intuitive spatial application. EcoCharge utilizes a Continuous k-Nearest Neighbor query, where the distance function is computed using Estimated Components (ECs). An EC defines a function that can have a fuzzy value based on some estimates. Examples of ECs are: (i) the derouting cost, which is the time to reach the charger depending on estimated traffic; (ii) the (available clean) power at the charger, which depends on the estimated weather; and (iii) the charger availability, which depends on the estimated busy timetables that show when the charger is crowded.