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Gilbey
the cellular system for 2g is provided under contract by Telefonica. The contract to provide this service to the DCC has another 9 years to run. As this system is separate from mobile systems there is no technical reason for it to cease working when 2g/3g mobile service are discontinued- however in some areas that seems to be the case. On the other hand switch off of those services is widespread and if the telephonica 2g was discontinued we would see millions of exiting meters becoming disconnected, and that has not shown up in the figures published by the government, which show the proportion of dumb meters dropping over time. In general terms the number of dumb meters (mostly SMETS 1 meters) is falling ever so slowly and new meter installations, which usually work) grow continuously.
DCC has developed with industry a 4g system which is available to suppliers to install. This will become the long term default option in southern UK, as a radio System is utilised in the north. Supplier uptake is not known by me.
it remains the case that OFGEM has performance indicators for suppliers that considers new smart meter installations, but has no measure of whether existing smart meters work full or partially or are completely dumb. Therefore there is a perverse incentive to roll out new installations rather than fix existing set ups.
DCC do release information on their website, but it does not address issues in non technical terms, and is not generally responsive to enquiries from the public with whom they have no contract relationship. OFGEM are useless and suppliers often obtuse.
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retrotecchie is the man for the aerial aspect. Neither of us has smart meters.