Many have said that you should time expensive domestic use to match your charging times, easier if you have a variable time rate like Octopus as the savings will build up.
Whether a tariff suits you also depends on what you’re doing through the day. If everyone goes to work, then a cheap night rate balanced by an expensive day rate works, if you’re at home and can do the washing through the day, that day rate makes a difference.
It’s horrible having to work out what’s better and isn’t helped when you ask on an EV group and get a mass of people giving you codes for referrals from people who work all day.
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