Look, this is silly. Yes, we would need unfeasible amounts of new wiring to recreate a modern high energy economy powered only by (green) electricity. But we would also need completely unfeasible amounts of lots of other things – most particularly metals. We are going to have to learn to live WELL in a much lower energy world – and, actually, it isn't hard to see how we achieve this.
https://www.theguardian.com/business/2023/nov/25/race-to-get-uk-electricity-grid-ready-for-net-zero