I think the use of electricity refers to the manufacture of the capsuals, and other processing, not to the use of electricity to heat the water.
At home we use a moka but I have used an espresso machine that uses ground coffee. It was fast to heat from cold and absolutely no effort to clean. Have a look at
https://www.delonghi.com/en-gb/products/coffee/coffee-makers/pump-espressoThe actual machine I used was the
Dedica Style EC 685
I liked it so much that I would buy one tomorrow but we have a very small kitchen and there really isn't a place to put it.