[sofixa]

Because those were the first EPRs ever. Now that most caveats and issues are discovered, next ones should be drastically faster and easier.

> France can also build large construction projects without the massive cost overruns that the US has had

Not always, some easily go overboard, like with the Parisian Philharmonic, or the absolutely massive Grand Paris Express (~200km of new high capacity metro lines around Paris) which has seen the budget go up from an original estimate of 19 billion to 35 billion (euros). Completely normal considering the scale and complexity, but still.

[Gwypaas]

Hinkley Point C, started 12 years later, is going swimmingly I hear! Going to cost the consumers ~$150/MWh and it is starting to look likely that EDF even at that incredibly high price takes a loss on it.

> Since construction began in March 2017, the project has been subject to several delays, including some caused by the COVID-19 pandemic,[10] and this has resulted in significant budget overruns. As of May 2022, the project is two years late and the expected cost is £25–26 billion,[11] 50% more than the original budget from 2016. It is currently planned to be commissioned in June 2027 and has a projected lifetime of 60 years. In February 2023, EDF announced that costs would rise to £32.7bn and completion would be delayed by a further 15 months to September 2028.[2][12]

https://en.wikipedia.org/wiki/Hinkley_Point_C_nuclear_power_...

[sofixa]

Started before all problems had been fixed with Flamanville and Olkiluoto, it's a part of the initial generation.

[epistasis]

Do you have any examples of a very high cost reactor dropping by a significant amount on a subsequent build?

South Korea was able to eke our small decreases in cost (though some people have ended up in jail for falsifying record keeping). But otherwise, costs tend to rise. And I'm definitely not aware of a drop of 50% or so, to bring these excessive costs into the realm of competitiveness.

[Gwypaas]

Is not the definition of insanity is doing the same thing over and over and expecting different results?

[sofixa]

When building complex infrastructure for the second/third/etc. time? Of course not. Economies of scale is the term you're looking for.

[epistasis]

When has nuclear ever had economies of scale?

[Gwypaas]

Hinkley is the fourth time, still no dice.