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Smart Energy

Zigbee Smart Energy is one of the standards of the Zigbee Alliance used for energy saving. At present one protocol enables to combine the equipment of different manufacturers of electricity, water and gas meters into one network. One protocol allows interaction with smart home equipment which regulates the level of energy consumption for a consumer and utility. Thus, products of different manufacturers certified according to Zigbee Smart Energy standard can operate in one network.

Zigbee Smart Energy comprises two types of radio networks which are software compatible.

The first type of radio network (red lines) refers to Wifi,Zigbee and other local wireless networks which serve as a basis for a local network. The second type of networks (green lines) refer to Smart Home and HAN and form one network inside the home. They allow to measure energy consumption from any meter. As all the devices which operate in Zigbee network have data encryption, they are protected from external use. Black lines are high speed lines of data transmission to a local wireless network and can refer both to wired and wireless technology.

How Zigbee Smart Energy operates and how cost-effective it is for a consumer and energy company alike can be seen from an example given by Itron. On energy market there is an energy company and a consumer. With a help of the system working according to Zigbee Smart Energy standard, energy company interacts with a consumer having a wireless access to energy devices, sensors due to a quick Zigbee, Wifi network. Consumers sign contracts to save costs. Pictures below show the system which has been installed in the whole city district.

 Pic.1 Forecast of the curve's peak for tomorrow

 Pic. 2 Request of energy- saving programme participants about tomorrow's saving

 Pic. 3 Message from utilities received via meter and forwarded to the thermostat display in the house

 Pic. 4 Data collection by energy company from electricity meters for a load curve control

 Pic. 5 Critical situation with energy consumption