A method and a management server located in the cloud, for enabling adaptive power management in a gateway system, are described. The management server receives, from the gateway system powered by a rechargeable battery that is coupled with a solar power source, a location measurement indicating the location of the gateway system at a first time. The management server determines a solar profile indicating a measure of the power expected to be generated by the solar power source at the location during an interval of time that occurs after the first time. The management server transmits the solar profile to the gateway system causing the gateway system to determine based on a current battery level of the rechargeable battery and the solar profile an optimal power usage plan for the gateway system and to operate according to the optimal power usage plan during the interval of time.