Patent ID: 8362713

Claim:
A method for a distributed energy storage solution in a lighting unit, the method comprising: charging a battery from an external power supply; powering a light source with the external power supply, such that the light source emits light in response to receiving an amount of power from the external power supply; receiving, from an external control source, information concerning power amounts to be supplied to the light source from the external power supply and from the battery; selecting, based on the received information, a first portion of the amount of power to be supplied to the light source from the external power supply; selecting, based on the received information, a second portion of the amount of power to be supplied to the light source from the battery; and supplying the amount of power to the light source by supplying the first portion of the amount of power from the external power supply and the second portion of the amount of power from the battery while maintaining an intensity level of the light source based on at least one of the received information from the external control source or a reduction in power demand from the external power supply during a period of peak usage.