Large buildings(the ones who spend large amounts of money on HVAC related energy consumption) are already putting up a shadow electricity meter which counts the

Large buildings(the ones who spend large amounts of money on HVAC related energy consumption) are already putting up a shadow electricity meter which counts the pulses. The data is then read using a LonWorks(wired)/Zigbee (wireless) meters which have web/SOAP interface. If Wattvision can come up with sub $100 equipment, then this will get interesting.