I once rented an apartment with a modern 2 in 1 washer dryer and it was easily the worst appliance I ever used. Bar none. The whole ordeal would take like 4 or 5 hours because using very little water means you need a 90 minute wash, and the dryer is of course too anemic to be much better than just setting the clothes out to dry on every available piece of furniture you own.
I'll take a little bit of inefficiency on my end as a consumer. I am the little man after all my footprint is small enough compared to what globalized industry is wreaking on the planet. I shouldn't be made to feel bad to have a washer dryer that is actually a time savings compared to a washboard and clothes line.
FWIW in CA your rate also depends on your provider. I am paying like 16 cents a kilowatt hour.