A method for power consumption management in a datacenter. A processor retrieves a power usage model and historical power data for devices in the datacenter and calculates a first supply power from a power supplier that is available for distribution to the datacenter during a load shedding time period. A first power usage for the datacenter is calculated during the load shedding time period. The method further includes determining if the first supply power is greater than the first power usage for the datacenter during the load shedding time period. In response to determining that the first supply power is not greater than the first power usage, a first device in the datacenter is identified to reduce power consumption. The first device in the datacenter is triggered to reduce power consumption during the load shedding time period.