Almost once a week from an online supermarket. I typically plan 4 or 5 meals as I shop, with adhoc rice/pasta/noodle dishes, frozen portions and takeaways/meals out that usually lasts for 8 or 9 days.

I mostly cook vegetarian so most of the shop is fresh vegetables. We do eat chicken or fish once a week though. “Essentials” are pea milk, fruit juice, tomatoes, bread, eggs, avocados, oats, fresh/dried/frozen fruits - everything else is meal dependent.

It’s much easier planning and buying from home and the selection online is much better than any of the local supermarkets. The only thing I regularly buy offline is coffee from a local roastery. There’s some great independent shops in my village, but the green grocer can be a bit hit and miss on quality and it’s rare that I can find everything we would like (or need) so I mostly use for the odd thing/special occasions. I will go to the bakery on a weekend in warmer months though.

About 30% in Europe/US; half that in China.

Electricity consumption drops sharply during the night - when wind power typically peaks. There are power companies that offer substantially cheaper rates at night for charging EVs for this very reason.

“Most BEVs are charged over night, where only Hydro or Geothermal makes power”

Maybe in Iceland; anywhere with wind and nuclear power, this really is not the case.