[eloff]

It's trite, but it's never too late to start. Certainly starting now is better than doing nothing in this case, and nuclear may be a good option. I'm not convinced that old nuclear tech is economically viable anymore compared to batteries + renewables. New nuclear tech may be. We need investment there.

[runarberg]

I don’t think we have time to wait for new old school plants to be built, and we certainly don’t have time for new tech to be developed, tested, regulated before we even start building it. We should start now with the tech we already have (which is renewables).

[eloff]

Doing one doesn't preclude doing the other, that's a false dichotomy.

[toast0]

It could possibly be too late to start with new nuclear plants, although I'm not totally convinced.

If we had them now, nuclear plants would be vastly superior to coal plants for baseload, at least in terms of emissions.

The question is, if a nuclear plant takes 20-30 years from project start to being online, how will it compare with what's available then and over the design lifetime (50ish years). Of course, we can't know for sure, but if storage becomes good enough in the next 30 or so years, the lifetime economics of a nuclear plant get pretty bad.

That said, maybe the economic risk isn't as important as the emissions risk. If renewable + storage doesn't work, and we are still running coal plants in 30 years, that's probably worse than if renewable + storage works and ratepayers paid for an underutilized nuclear plant.

[vbezhenar]

Why 20-30 years? Russia started building of Belarus nuclear plant at 2011. It already works and will be completely finished at 2022. Is US nuclear industry significantly behind Russia?

[toast0]

From wikipedia, the most recent nuclear plant to enter operation in the US is Watts Bar reactor 2. It entered operation in 2016, while being under construction for a total of 17 years; 8 years between 1973 and 1985, then 9 more between 2007 and 2016.

The Vogtle plant reactor 3 and 4 project started in 2006, construction started in 2013, and planned operation is 2021; but these things are often delayed. And that was at an existing site. 20 years may be pessimistic, but not unduly so, based on recent experience.

[quicklyfrozen]

Any US project will face many years of interruptions by protestors, court cases, etc. Given the timespan, the project will also likely face administrations that don't support nuclear and attempt to stall the project.

Unfortunately, people don't believe in climate change enough to acknowledge that nuclear is worth the risk (a risk that would be much reduced by allowing more modern plants to be built).

[eloff]

Yes. US construction in general takes longer and costs almost an order of magnitude more for large infrastructure. Why? Higher standards certainly. Higher pay too. But you can't tell me Russia is less corrupt with a straight face. So what accounts for the difference? I think it's disturbing that the US is forgetting how to make things in general.