I’ve no direct experience with tariffs as I’m stuck on pre-pay.
When you spend time in EV groups they all talk about a few tariffs, Octopus anytime and rate tracker and an OVO rate. That would lead me to think that these would be the best rates for EV owners. Some have been paid for some low demand times, which means charging, high demand household items were all ran at the same time reducing the monthly bill.
I'm Autistic, if I say something you find offensive, please let me know, I can guarantee it was unintentional.
I'll try to give my honest opinion but am always open to learning.
Mark