Eris

It isn't though. In the UK there is a choice of supplier and were it not for the ridiculous interference of Princess Nut Nut over BoJo and the additional "green" taxes and cross production subsidy taking place the UK cost would be hugely reduced.

The whole gas/electricity supply (and more besides) on the island is a monopoly. You're being ripped off.

Put a licence out to tender with the winner to build and run with a deal that includes a %age of generated power as license servicing. Look on it as a joint venture as is commonly the basis of such developments BUT engage a competent contract negotiation firm because it has been obvious for many decades that there is no such competence anywhere within your government or civil service. However the whole gas farrago is disgusting from start to finish.

Go nuclear and sell excess production to UK.

Such is only one of the consequences of allowing monopolies.