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'Advanced nuclear' neglects the last developments (the Vogtle nuclear plant project hugely over-budget and late https://en.wikipedia.org/wiki/Vogtle_Electric_Generating_Pla... , cancelled plans (Montagorda, V. C. Summer, River Band, Callaway...). Even the newest pipe dream in town (SMR) already had its first rebuff ( https://arstechnica.com/science/2023/11/first-planned-small-... ).

Last but not least... there is no running project.

Therefore writing "US nuclear capacity has the potential to triple from ~100 GW in 2024 to ~300 GW by 2050." in a title is for sure easy, however there is now sign of such potential to become anything else.

As long as the source is not consuming any fuel nor producing much waste any EROI greater than one seems OK to me.

> why they assume 4h storage?

AFAIK because they consider that electric vehicles' batteries will be useful (through V2G).

> What you'll do in case both solar&wind will be low?

AFAIK the idea is to interconnect at continental scale, as this is useful whatever the type of sources (even if it is mainly nuclear), then to benefit from diverses wind (or even solar) regimes.

> overcapacity will need to be subsidized heavily because excess solar capacity will be unused a lot of the time

Not with an electric fleet of vehicles, to begin with. Green hydrogen will also absorb part of it (for industrial applications, electric backup...).

> if it'll be used less and less, youll need subsidies

This will kill nuclear (see https://www.youtube.com/watch?v=udJJ7n_Ryjg ).



you sure it neglects vogtle?

> AFAIK because they consider that electric vehicles' batteries will be useful (through V2G). - lol, kinda interesting assumptions, especially considering that it'll still imply additional costs

> AFAIK the idea is to interconnect at continental scale - lol, at such scales that sounds as a bigger pipedream than cheap h2 emission free generation

> if it'll be used less and less, youll need subsidies

> This will kill nuclear (see https://www.youtube.com/watch?v=udJJ7n_Ryjg ).

This will kill basically any peaker plant be that fossil, hydro or nuclear. That's kinda the point. With a renewable grid you'll need huge overcapacity of both production, peaker and storage that'll be rarely used. No matter the technology - any of it will get extremely expensive the higher the renewable share will get. Even Norway starts facing similar problems since they import cheap renewable in peak production, meaning their hydro is earning less


> you sure it neglects vogtle?

No, your "Advanced Nuclear - Pathways to Commercial Liftoff" plays the usual "we benefit from failures because we learn" card, and concludes with promises "The next AP1000s would also realize substantial cost reductions". This is not IMHO solid, especially given well-known pertinent experience (about gaining from experience!), such as https://www.sciencedirect.com/science/article/abs/pii/S03014...

V2G seems solid to me and to most experts (even France seriously studies it!).

The continental scale ('copper plate') is an official objective in many continents, and already actively and for quite a while pursued: https://en.wikipedia.org/wiki/European_Network_of_Transmissi...

> With a renewable grid you'll need huge overcapacity

Not at continental level ( https://www.imperial.ac.uk/news/180592/european-cooperation-... )


based on the fact unit 4 proved there's positive learning curve (30% faster & cheaper than unit 3) they extrapolated this so it seems pretty normal, much more believable than a continental scale grid that'll not need much overcapacity and storage, including because of v2g, that's a pipedream of a solution. Just think of dunkelflaute that'll affect a lot of northern countries, think how much overcapacity the other members will need to have to cover it.


> unit 4 proved there's positive learning curve

Unit 4 proved that work units in a given project, sharing the same lapse of time and space, can benefit. Extrapolating it to a whole set of projects is another matter (see the referenced study).

> a continental scale grid

Already exists and is continuously extended: https://en.wikipedia.org/wiki/European_Network_of_Transmissi...

> dunkelflaute

Its real impact (surface, frequency, duration...) is vastly overstated. In a glimpse: https://x.com/JonaSalKupper/status/1707035071394238889


Yeah, vastly overstated... at this point you're not serious dude. I'm also very aware of european grid, but I guess you didn't read the part that you still need huge overcapacity


I cannot see any counter-argument in your answer.

> huge overcapacity

You didn't source this. This vastly depends on many parameters. Moreover as renewables machines are cheap, recyclable, and can be installed in unused places (or even protect them, as offshore wind does for oceans) you have yet to show which challenge this 'huge overcapacity' stems.




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