A system comprising: a lead comprising a plurality of electrodes arranged in a complex electrode array geometry for delivery of electrical stimulation therapy; and one or more processors configured to: (a) identify, as a first electrode combination, a set of one or more electrodes (66,68,70,72) from the plurality of electrodes configured to deliver electrical stimulation therapy via the lead; (b) determine if an alternative electrode combination from the plurality of electrodes is available and, if there is, determine the alternative electrode combination; (c) performing step (b) repeatedly until determining that an alternative electrode combination is not available; (d) determine a power consumption value for any determined alternative electrode combinations; (e) determine a stimulation field of the first electrode combination and for any determined alternative electrode combinations; determine, based on the determined stimulation fields, a similarity of the stimulation field of each alternative electrode combination to the stimulation field of the first electrode combination by calculating for each alternative electrode combination, a respective field similarity score representing the determined similarity of the stimulation field of the respective alternative electrode combination to the stimulation field of the first electrode combination; and (g) output a representation of the respective power consumption values and the respective field similarity scores for the alternative electrode combinations. a lead comprising a plurality of electrodes arranged in a complex electrode array geometry for delivery of electrical stimulation therapy; and one or more processors configured to: (a) identify, as a first electrode combination, a set of one or more electrodes (66,68,70,72) from the plurality of electrodes configured to deliver electrical stimulation therapy via the lead; (b) determine if an alternative electrode combination from the plurality of electrodes is available and, if there is, determine the alternative electrode combination; (c) performing step (b) repeatedly until determining that an alternative electrode combination is not available; (d) determine a power consumption value for any determined alternative electrode combinations; (e) determine a stimulation field of the first electrode combination and for any determined alternative electrode combinations; determine, based on the determined stimulation fields, a similarity of the stimulation field of each alternative electrode combination to the stimulation field of the first electrode combination by calculating for each alternative electrode combination, a respective field similarity score representing the determined similarity of the stimulation field of the respective alternative electrode combination to the stimulation field of the first electrode combination; and (g) output a representation of the respective power consumption values and the respective field similarity scores for the alternative electrode combinations. (a) identify, as a first electrode combination, a set of one or more electrodes (66,68,70,72) from the plurality of electrodes configured to deliver electrical stimulation therapy via the lead; (b) determine if an alternative electrode combination from the plurality of electrodes is available and, if there is, determine the alternative electrode combination; (c) performing step (b) repeatedly until determining that an alternative electrode combination is not available; (d) determine a power consumption value for any determined alternative electrode combinations; (e) determine a stimulation field of the first electrode combination and for any determined alternative electrode combinations; determine, based on the determined stimulation fields, a similarity of the stimulation field of each alternative electrode combination to the stimulation field of the first electrode combination by calculating for each alternative electrode combination, a respective field similarity score representing the determined similarity of the stimulation field of the respective alternative electrode combination to the stimulation field of the first electrode combination; and (g) output a representation of the respective power consumption values and the respective field similarity scores for the alternative electrode combinations.