Managing power consumption in a user space that includes user devices and motion detectors includes monitoring user presence within the space including: monitoring the user devices for user activity, where user activity indicates user presence within the space; and monitoring the motion detectors for user movement, where user movement indicates user presence within the space; if the user devices and motion detectors indicate no user presence within the space, setting one or more environmental control devices to a reduced power consumption state; and if the user devices and motion detectors indicate user presence within the space, setting the one or more environmental control devices to operate in a user-present power consumption state.