The nuclear power facility near the town of Leiston on the Suffolk coast is due to be up and running by the mid-2030s. It is expected to cost £20bn, with the government committing to £17.8bn in funding so far. https://news.sky.com/story/what-is-size ... l-13381498
And that's the opening cost. Electrcity storage technology and grid management will have advanced in the mid 30s enough to hopefully see the end of the moribund nuclear dream in sight. It's the least bad option among non renewable energy choices but that's not saying much.