Power socket that tells you if your electricity is from renewable sources
This piece on the BBC News website caught my eye:
There is a rumour that Youview are in the process of developing a new standby mode that will make full use of this clever new power socket.
When the new mode is enabled and the box is plugged into one of these sockets, it will run entirely on renewable energy.
The new mode will appear in the Settings Menu alongside Smart and High Eco. It will be labelled BS mode.

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You started the scepticism by labelling it BS (albeit in relation to YV).
https://www.nationalgrid.com/stories/journey-to-net-zero-stories/app-helps-you-work-out-how-green-your-power
I don't think it's aimed at individual consumers, it's more about managing power in large buildings.
And they've got at least one significant financial backer: https://www.thegazette.io/Detailed/Environment/measurable.energy_secures_financing_to_begin_scale-up_operations_of_its_Machine_Learning_and_IoT_platform_175.shtml