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Many modern VSDs display electrical output power to the motor. The ABB ACH580, ACQ580, and ACS880 Ultra-low harmonic drives even show actual input power.
ACH580 drives family 
ACQ580 drives family 
ACS880 drives family
These are not revenue-grade meters, so you will not be billing anyone with this data. But they are excellent to use to learn about where power is being consumed within your facility – without the need for submetering in front of VSD-driven equipment. They are also great for trending power consumption over time, and comparing like equipment to each other.
Assuming the drive is connected to a BMS or SCADA system, you could monitor that power information over BACnet for HVACR systems, or another protocol for industrial-based networks.
