US Patent 9252613 Managing load power consumption based on stored energy rate

A system includes an energy storage device, a power generator, and a controller. The energy storage device is operable to power a load. The power generator is operable to charge the energy storage device. The controller is operable to generate an energy storage metric representing a quantity of energy stored in the energy storage device over a first time interval and adjust at least one power consumption characteristic of the load for a second time interval based on the energy storage metric.