15% sounds impressive but it's 60 GBP in absolute savings. That might just be enough to finance the hours it probably took to collect, compile and process all things necessary to make this calculation.
However the UK has been running its power generation asset into the sand, we are increasingly reliant on things like https://ukpowerreserve.com/
So I expect that with the relentless push to smart metres (which is an optional EU directive, irony or ironies) we will see peak costs rise to battle the loss in cheap spare capacity.
the battery bits they have are less than 10% of their portfolio. In fact I would go so far as to say that their battery offering is mostly hot air, as they boast about its capacity in MW, not MW-hours
Per year. And assumes electricity prices won't go up.
It took me half-an-hour to grab the CSV files from my monitoring, a write a scrap of Python to work out the difference in prices, then double-check my workings.
What would your advice be to someone with no electric car, no solar battery, no solar panels, and no subsidy available on them? Is the smart tariff still a good deal?
The smart battery provides the monitoring. It is literally a clamp on the meter to monitor import and export, and one on the solar panel feed to measure generation. Small bit of Python to grab it ever 10 minutes.
However the UK has been running its power generation asset into the sand, we are increasingly reliant on things like https://ukpowerreserve.com/
So I expect that with the relentless push to smart metres (which is an optional EU directive, irony or ironies) we will see peak costs rise to battle the loss in cheap spare capacity.