What different between the system power and rated power of high power led module

What different between the system power and rated power of high power led module
Each high power led module offers a different power parameters . these parameters can be used in production specification . This thesis mainly includes that rated power and system power.
* system power: system power of high power led module is summary of whole led system.(include electricity power consume, switch power consumption, the power consumption of high led module, led supply power consumption,  and so ).
*rated power: rated power refers to led to consume power when led’s daily operation(this led module is only included in rated power).