Patent ID: 8385083

Claim:
An energy management system comprising: a coax controller apparatus comprising an exterior housing and plurality of coax modules numbered from 2 through N, where N is an integer greater than 3, each of the coax modules comprising a powerline chip (PLC) module coupled to an analog front end, the analog front end being coupled to a coaxial connector; an electromagnetic shield configured to each of the coax modules, the electromagnetic shield being configured to substantially maintain the coax module substantially free from interference noise; a power meter coupled to one or more ports of the coax controller apparatus; and a multiplexer configured between a plurality of power lines numbered from 1 through M and a television broadcasting line, wherein the multiplexer comprises a plurality of capacitor coupling circuits, the plurality of capacitor coupling circuits being coupled, respectively, to the plurality of power lines numbered from 1 through M, each of the plurality of coupling circuits being coupled to a filter configured to remove a frequency ranging from 0 to 30 MHz, the filter being coupled to the television broadcasting line.