SMETS Smart Meter

How Smart Meters Work

Unlock the Power of Smart Metering: A Closer Look at the Future of Energy Management

Some Acronyms

IHD - In-Home Display (like the Trio 3)
WAN - Wide Area Network (like the Internet)
HAN - Home Area Network (like Zigbee)
DCC - Data and Communications Company (like a Coordinator)
SMETS1 - Smart Metering Equipment Technical Specifications (Version 1)
SMETS2 - Smart Metering Equipment Technical Specifications (Version 2)


Imagine a world where your energy consumption is no longer a mystery, where you're not just a passive consumer but an active participant in the energy ecosystem. Welcome to the realm of smart metering, a dynamic duo of innovations that brings your energy usage to life and bridges the gap between you and your energy supplier like never before. Let's embark on a journey through the heart of this groundbreaking system, where two interconnected marvels, the Home Area Network, and the Wide Area Network, pave the way for a brighter, more efficient future.

Home Area Network: Where Your Energy Story Begins

Step into the Home Area Network (HAN), an ingenious cornerstone within your abode's walls. Think of it as the beating heart of the smart metering revolution entrusted to the care of your energy supplier. Nestled within this network are the remarkable smart meters, the in-home display acting as your energy interpreter, and the communication hub – your home's energy command center.

Picture this hub as a vibrant energy orchestra conductor orchestrating a symphony of data flows. Like diligent messengers, your smart meters wirelessly transmit vital energy insights to this hub. And like magic, the hub dispatches this treasure trove of information to your in-home display and energy supplier. It's a dance of connectivity that transforms mere data into actionable wisdom.

A cable connects hub SEAP-2001-V to the Electricity meter and wirelessly to the local HAN network for the Gas Meter and the WAN for DDC meter readings.

The GAS meter sends its readings over the HAN to the HUB for forwarding over the LAN to the DCC for onward transmission to the billing company. The IHD picks up the meter readings from the HUB over the HAN for local convenient display for the customer.

But here's the twist: harmony is disrupted if the Home Area Network falters. Smart meters lose their voice, and the in-home display falls silent. The vital conversation between you and your energy supplier stutters. It's a reminder of the intricate ballet that powers this new-age relationship.

Wide Area Network: Where Conversations Transcend Boundaries

As we journey beyond the confines of our homes, we encounter the Wide Area Network (WAN), an expansive realm that bridges gaps and brings the world of smart metering to life on a grand scale. Imagine it as a vast web of communication threads spanning across cities and landscapes, uniting smart meters and energy suppliers in a seamless conversation.

This grandeur exchange occurs over a secure network reminiscent of the technology behind our trusty mobile phones. And at the heart of this exchange lies the communications hub, a master connector between the intimate Home Area Network and the sprawling Wide Area Network. When all is well in this realm, the dialogue between smart meters and suppliers flows effortlessly, enriching both sides with valuable insights.

If you live in a weak 4G signal area, the WAN can fail to connect to the network, and meter readings are not transmitted to the billing companies. You may find an 'aerial extension' from the HUB installed to reach a more reliable or stronger 4G from the WAN connection.

Yet, just as nature has its storms, so does technology. When the Wide Area Network faces turbulence, the symphony of communication falters. Smart meters lose their voice, and the vibrant exchange with suppliers quietens. It's a reminder of the delicate equilibrium that fuels this dynamic conversation.

The Marvel of Evolution: From Third-Party to National Network

In this saga of innovation, we encounter a fascinating evolution in the realm of communications networks. In the early chapters, third-party networks took center stage, enabling the magic of smart meters to touch our lives. Then, a purpose-built national communications network emerged with a flourish, an architectural marvel sculpted by the Data and Communications Company (DCC). This new era promised even greater wonders.

Yet, like all great transformations, the transition wasn't without its challenges. The national network, while potent, wasn't ready when the smart meter wave began. To ensure you could experience the marvels of smart meters, energy suppliers harnessed the power of third-party networks. First-generation smart meters danced to the tune of these networks, sharing their insights with suppliers.

Enter the second generation, donning the cloak of progress. These smart meters seamlessly embraced the purpose-built national network, painting a portrait of connectivity unparalleled in its elegance. But there's a catch: the tale of the SMETS1 meters, their magic bound to a single supplier. When the supplier changes, the magic dims, and the meters are in a "dumb" slumber. Yet fret not for the Data and Communications Company toils to awaken these slumbering sentinels, ensuring compatibility with all suppliers in a symphony of phases.

As we close this chapter, we stand on the precipice of a new dawn in energy management. Smart metering, with its twin enigmas of Home Area Network and Wide Area Network, promises a future where energy is no longer a mystery but a symphony of understanding. It's a dance of data, a connectivity conversation, and an ode to progress. So, embrace the magic, for the journey has only just begun.


Smart Metering Equipment Technical Specifications Version 1 (SMETS1 meters) are limited to a single, original energy company with attempts made to remotely convert them to the SMETS2 version, not all of which are successful.

SM1 Smart Meter

SM1 on the body of the energy meter identifies it as a SMETS1 Meter.

Smart Metering Equipment Technical Specifications version 2 (SMETS2 meters) are a universal meter connection that connects to DCC and is not limited to a single energy supplier. All new Smart Meters are SMETS2.





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