Why we could have a tepeo ZEB boiler with joined up thinking and a

different sim card.

Jonathan Hazell MA MBBChir FRCS


The WAN connection The boiler:


I was hoping for an electric tepeo Zero Emission Boiler and I am top of list for a 40k boiler. However it needs an octopus go contract with smets2 meter to match boiler brain to get cheap electricity and train the boiler’s brain. (Tepeo rules)

Smets2 needs a DCC WAN connection which in south England and our area is provided by Telefonica through their mobile network using sim cards presumably O2 – no coverage here. So noone will fit the meter. BUT see below – they can use another SP sim card if they wanted to.

Octopus go gives 4 hours of 5 p a kwh and tepeo will store 40kwhs in that time. Enough for us! It has a really complex control system to make the most of electricy. Now: No smets2 meter : no octopus: no new boiler. Snookered. Old rusty oil boiler still working, but everytime it fires up I start worrying! Told it could leak at any moment. We have one other 7k solution installing outside oil boiler, but means taking the grade 1 listed house apart as it would be on the other side of the house from the central heating pumps. And the electric solution is elegant and zero carbon and ‘ cut and paste’ .


Wide Area Network

The Smart Metering Wide Area Network (SMWAN or WAN for short) is the name given to the communications network between the communications hub sitting on top of your electricity meter and the company responsible for collecting the data and passing it on to other businesses such as suppliers. This company will usually be the Data Communications Company (DCC) which the government has set up especially for the role of supporting SMETS1 and SMETS2 meters. Depending on the Communications Service Provider (CSP), which varies by areas of the UK, the technology can change depending on what works best in a local area. Sometimes your comms hub will communicate directly with DCC and sometimes it will talk through other comms hubs around you to reach a particular comms hub which has direct communications with DCC. This form of communications looks like a mesh when you draw out the possible links between meters and is therefore known as a Mesh network.

Scotland and the North of England

Long-Range Radio communications (LRR) is used by Arqiva Limited in Scotland and the North of England. The LRR system uses infrastructure and technology similar to that already used for other important national communications networks, such as those for emergency services and keeping lifeboat stations connected. Communication towers communicate directly with smart meter Communications Hubs in homes.

By 2021 Arqiva Limited will have achieved their contacted coverage of at least 99.5%. Rest of England and Wales

The 2G/3G cellular radio communications network is used by Telefónica in the rest of England and Wales. This system is commonly used by mobile phones. In a cellular system, geographical areas are divided into regular shaped “cells”.

Additionally Telefónica also use local mesh networks to fill in the mobile coverage gaps.

By 2021 Telefónica will have achieved their contacted coverage of at least 99.25% in the Central and South Regions.

Comments on above website by Jonathan Hazell

Telefonica is the ‘communication service provider’ for SMWAN ( smart meter wide area network) in the south of England and us on the North Norfolk coast. It uses O2 sim cards, in our case a useless service in our area,

O2 is one of the worst mobile connections,

This means that telefonica needs to provide PE31 8JB potential SMETS2 users with an alternative sim card for their meter. Then we can order our tepeo ZEB.

Jonathan Hazell 07770858024

but it is promised on the WAN website that other sim cards or SPs

could be used where there are mobile coverage gaps.

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