My first house had a car port, ideal for drying clothes, but without it, it means the drop everything, its raining, someone has lit a BBQ, or a bonfire, and in this house, sets of steps to a garden area we could use.
So in the main, we tumble dry with solar power. Sometimes we use off-peak, but it allows drying sans bird lime.
I remember our first house, and washing day, my parents had one of the first Bendix front loaders, bolted to the floor. So the twin tub was somewhat an eye-opener, washing one day a week, and whites first then colours, and my overalls the last, all in the same water. All through the mangle into spin drier, then out on the line.
No cooking on washing day. And back then terry towel nappies.
It was an all day job, I look back at what my wife did back then, and she had a hard life.
When we moved to second house, children in school, so she started to work, so simply no time to use a twin tub, or a washing line, and the tumble drier took up its place in the annex to kitchen. Never had washing machine or tumble drier in main kitchen since that first house. Food and clothes washing don't really mix.
But until I moved here, and got solar installed, what time of day I did things did not matter. And the whole question of being ruled by solar and tariffs is something quite new to me. And not sure if we should? If in town, we think nothing of having a meal in the supermarket café, likely cost 3 times cost to eat at home, if not more, but we will stay up until 00:30 to turn on washing machines before retiring.
Yesterday it rained, but by 10:30 the batteries were full, but did my wife do all the washing then, no, she did it before going to bed, it really does not make any sense.
Not sure economy 7 ever made sense, OK where no option, high rise flats etc, but oil and gas have always been cheaper, and to call storage radiators central heating was simply not correct, there was nothing central about it.
I see this

on my electric app, not a clue what it means, don't want dirty carbon footprints on my clothes, but unless I walk in the steam trains ash, and then trample on my clothes, think it's highly unlikely to happen.