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Had to look that up but looks interesting, have full electrics heating so don't believe that would work there.
For cost wise, if I can use my 5000kwh a year from the battery, that would be over £500 per year saving, in theory, just based on all day time electricity usage being from the battery. Not sure how likely that is
Bernhard
We looked into lots of PV/overnight electricity storage options before settling on a sunamp unit. More than 50k cycles with the restriction of only using it for heating/DHW was a decent tradeoff. If you can use all the overnight electricity into a car/TS then you might get equivalent gains, but generally electric batteries (outside of an existing car) couldn't pay for themselves compared to a daytime tariff and a TS has standing losses and the added space requirements.