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 ZigBee Smart Energy FAQ  
  1. What is ZigBee Smart Energy 1.1 and what functionality does it add?

    ZigBee Smart Energy 1.1 is an incremental release of the ZigBee Smart Energy standard. ZigBee Smart Energy 1.1 adds two categories of features, the first introduces new optional functionality, including:

    • Block tariffs (inclining/declining block rates)
    • Meter swap outs
    • Tunneling of manufacturer specific protocols
    • Prepayment
    • Over-the-air upgrades
    • Backwards compatibility 

    The second category includes enhancements to the test specification to further device interoperability. 

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  2. What is Smart Energy 2.0 and what functionality will it offer?

    The Smart Energy 2.0  effort was launched in 2008 to offer IP-based HAN functionality.  It will address the following emerging market requirements:

    • Deployments in multi-dwelling units
    • Support multiple Energy Service Interfaces into a single premise
    • Supports any transport layer based on IETF IP compliant standards, including but not limited to ZigBee IP, other RF-based and Power Line Carrier (PLC)-based transports
    • Support internationally recognized standards to ensure long-term interoperability with multiple technologies

    Accomplishing these goals has led to the adoption of networking standards that ensure interoperability between ZigBee and other network technologies.  The ZigBee Alliance is developing an internet protocol (IP) networking layer called ZigBee IP, which is based on the IETF-based 6LoWPAN technology.  The application clusters for Smart Energy 2.0 have been mapped to the IEC Common Information Model, that will be implemented in Smart Energy 2.0.  This provides a migration path for features defined in ZigBee Smart Energy 1.X to be supported in Smart Energy 2.0.

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  3. Will ZigBee Smart Energy 1.x and Smart Energy 2.0 be interoperable?

    While Smart Energy 2.0 will expand the application landscape for energy management solutions, the technologies it uses to meet business requirements are different than those used in ZigBee Smart Energy 1.X.  These differences in standards mean that ZigBee Smart Energy 1.X devices will be interoperable with Smart Energy 2.0 devices through a gateway.  This gateway function can be integrated into a product or made available in a separate device.

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  4. When will Smart Energy 2.0 development conclude?

    The development work on the Smart Energy 2.0 continues. The Alliance announced in April 2011 the successful approval of the 0.7 TRD version, and on July 15,2011 the start of a ballot and public comment period for the 0.7 version of the standard. It is now anticipated that Smart Energy 2.0 will be ratified by the end of 2011.

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