Specifications
XBee®/XBee‐PRO®SERFModules
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Energy Service Portal
The Energy Service Portal (ESP) acts as a ZigBee Coordinator and Trust Center to form and
manage a Smart Energy (SE) network. The ESP acts as a router to convey wireless messages
among the other devices in the network. The ESP may physically reside within another SE device
(like a metering device) or exist as a standalone device. The ESP provides a backhaul or gateway
connection to the utility company. The backhaul connection may be implemented by non-ZigBee
protocols and communicate via RF, Ethernet, or some other means.
Metering Device
The Metering device measures the use of a consumable provided by a utility company or other
provider (electricity, gas, water, heat). The device responds to polling requests for a reading. It
can also be requested to provide periodic readings to a requesting device. A utility provider sends
a request to an ESP, which relays the request to the Metering device. The Metering device
responds with a reading, which the ESP relays to the utility. Consumers may use In-Premise
Display devices to monitor the Metering devices in their respective networks.
In-Premise Display Device
The In-Premise Display device relays meter readings to the consumer with a graphical or text
display. These readings may include: reading level, use over selectable periods of time, pricing
information (tier rates for night, day, peak load times), text messages (there will be a demand
response and load control event occurring between 2 and 4 pm this afternoon). It may be
interactive - there is provision for an acknowledgement button for special messages.
Programmable Communicating Thermostat (PCT) Device
The PCT is a wireless thermostat which may be used by the consumer to opt in or opt out of
demand response and load control (DR+LC) events. It will receive DR+LC requests from the
utility. If the user has "opted in", then the thermostat will temporarily adjust its setpoint by
moving its threshold up a few degrees to ease the power demand from air conditioners.
Load Control Device
The Load Control Device is a kind of smart plug. It responds to DR+LC events by reducing duty
cycles or switching off non-essential equipment during peak load times as defined by the utility
provider. Again, the consumer may choose to opt-in or opt-out of those event requests.
Range Extender Device
A Range Extender Device is an extension of a ZigBee Router. It relays messages within the SE
network among the devices.
Smart Appliance Device
A Smart Appliance Device responds to price messages from the utility, and may generate
messages for consumer display. A washer might switch to colder water if gas or electricity costs
are running high. A dishwasher might report its cycle status periodically. Freezers might report
over temperature alarms.
Prepayment Terminal Device
The Prepayment Terminal Device definition is TBD at this time. The intent is to provide consumers
with means to prepay their utility bills in increments rather than through a billing agreement. It
can also optionally implement the Demand Response/Load Control cluster and respond to those
events as well. This is more common in Europe and developing countries than in the United
States. It accepts payment by a card swipe or digit entry, displays the balance, generates
message alerts when the balance runs low, and displays network messages.
Smart Energy Clusters
This section describes the clusters which are referenced by the Smart Energy Application Profile.
References to their detailed description appear in their respective subsections. The customer must