1. A method comprising: receiving, for a set of computing jobs, an amount of electricity to perform each computing job of the set; receiving expected costs for electricity at multiple data centers; projecting a lowest total cost to perform the set of computing jobs based on the amount of electricity to perform each computing job and the expected costs for electricity at each of the multiple data centers; and placing each computing job of the set at one of the multiple data centers based on the projected lowest total cost to perform the set.