When the UK's new nuclear power plant Hinkley Point C starts to produce power in 2030, its guaranteed 'strike price' will have risen to ~150 £/MWh (170 €/MWh). Average wholesale electricity prices will probably be around half of that, so that's a 50% subsidy.
At an annual production of 25 million MWh (3.2 GW in baseload), I'd say that's £1.9 billion per year in subsidies.
https://www.theguardian.com/uk-news/2025/nov/28/uk-energy-bill-payers-edf-hinkley-point-c-sizewell-c?CMP=Share_AndroidApp_Other
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