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dangoor 2 days ago

Nuclear is clean, but has other drawbacks. "Solar+Storage is so much farther along than you think": https://www.volts.wtf/p/solarstorage-is-so-much-farther-alon...

godelski 2 days ago | parent [-]

This doesn't seem to be passing a sniff test

1) cherry picking the best case.

2) numbers seem off

  > The sunniest US city, Las Vegas, could get 98% of its power from solar+storage at a price of $104/MWh, which is higher than gas but cheaper than new coal or nuclear. It could get to 60% solar+storage at $65/MWh — cheaper than gas.
But according to this[0], the US average cost of nuclear is ~$32/MWh (2023). I think the subtle keyword is "new", which could make for a very fuzzy argument.

Or maybe prices are different in LV but that's a big differential. It's also mentioning it's the best case scenario for solar. So even then, maybe that's the best option for Las Vegas, but is it elsewhere?

World Nuclear also gives us some global numbers to help us see the larger range of costs [1]

  > LCOE figures assuming an 85% capacity factor ranged from $27/MWh in Russia to $61/MWh in Japan at a 3% discount rate, from $42/MWh (Russia) to $102/MWh (Slovakia) at a 7% discount rate, and from $57/MWh (Russia) to $146/MWh (Slovakia) at a 10% discount rate.
I don't think this means we shouldn't continue investing in solar and storage, but neither does it suggest taking nuclear off the table. This might be fine for LV or other areas in the Southwest, but unless those costs can be stable for the rest of the country I think we should keep nuclear as an option.

We shouldn't forget: it's not "nuclear vs solar" it's "zero carbon emitters vs carbon emitters". The former framing is something big oil and gas want you to argue, and that's why they've historically given funds to initiatives like the Sierra Nevada Club. If we care about the environment or zero emissions then the question isn't as simple as "nuclear vs solar" it is "what is the best zero carbon emitting producer given the constraints of the local region".

[0] https://www.statista.com/statistics/184754/cost-of-nuclear-e...

[1] https://world-nuclear.org/information-library/economic-aspec...