1. A goal-based lighting controller, the goal-based lighting controller comprising: a network interface; a lighting system model of a lighting system; a goal module configured to receive a plurality of management goals for operation of the lighting system, the management goals being without light level settings for a plurality of light fixtures included in the lighting system; a demand model configured to convert the management goals into a power level for each respective one of the light fixtures, wherein the demand model determines a modeled operation of each respective one the light fixtures at the power level meets the management goals based on the lighting system model of the lighting system; and a hardware interface module in communication with the network interface, wherein the hardware interface module is configured to cause each respective one of the light fixtures to operate at the power level.