1. A method of group controlling and estimating power consumption of one or more LED drivers configured to drive respective LED loads, each LED driver of the one or more LED drivers configured to generate an out-source current while the LED driver is in an on-state, the method comprising the steps of:(a) receiving a dimming command input signal at a dimming controller having one or more dimming interface terminals linked to the one or more LED drivers;
(b) sensing a total out-source current associated with the one or more LED drivers, the total out-source current being a summation of the out-source current of each LED driver in the on-state;
(c) generating a dimming control output signal associated with the dimming command input signal across the one or more dimming interface terminals;
(d) estimating power characteristics of the one or more LED drivers and associated LED loads based on programmed relationships between the dimming control output signal and one or more operational parameters for a certain type of LED driver and LED load of the one or more LED drivers and associated LED loads.