Advanced energy meters include features such as wide-range high-accuracy current measurement, fast digital calibration, protection against meter tampering and theft of service. Communication via Power-Line, RF or wired (Ethernet or RS485) are making the meters “smart”. Worldwide standards, like G3, PRIME, Meters&More, IEEE1901.2, and Wireless MBUS are supported by ST.  To fulfil those needs, ST has introduced a reference design platform for smart electronic power meters. The block diagram enables you to select among a wide range of recommended applicable products.

Source: http://www.st.com/en/applications/energy-generation-and-distribution/energy-meter.html

Collapse All Control Unit Energy metering ICs One-chip AC-DC AC-DC Controller DC-DC buck Serial real-time clock (RTC) Voltage supervisor Reset and Voltage Detectors Accelerometers Temperature Sensors Power Mosfets Dynamic NFC/RFID Tag NFC/RFID transceivers Smart Card Interfaces Wi-Fi modules Sub 1GHz RF Bluetooth RF balun Ethernet Transceivers Power Line Transceivers