The economics are yet to be borne out. I believe the NuScale cost (feel free to correct me if this information is wrong) is still above the cost of renewables and storage [1] but below that of traditional PWRs (684Mw @ $3 billion [2], ~25 cents/kwh [3]), which is competitive in places like Hawaii (which is still relying heavily on diesel fuel for what solar isn't providing) and geographies with limited land or renewables potential, but not elsewhere (storage aside, you're still competing with renewables around 1-3 cents/kwh at utility scale).
Congrats to NuScale for making it through to the other side of US nuclear regulatory purgatory. Optimism is warranted ("all of the above" to replace fossil fuels), but cautious optimism. It's not real until a commercial reactor is generating. Vogtle is still not done [4]. I hope I get to see a factory churning out prefab reactors ready for shipment.
EDITs (to not pollute thread with replies): A carbon tax in the US is very unlikely, and you cannot count on economies of scale until you have arrived at scale.
Congrats to NuScale for making it through to the other side of US nuclear regulatory purgatory. Optimism is warranted ("all of the above" to replace fossil fuels), but cautious optimism. It's not real until a commercial reactor is generating. Vogtle is still not done [4]. I hope I get to see a factory churning out prefab reactors ready for shipment.
EDITs (to not pollute thread with replies): A carbon tax in the US is very unlikely, and you cannot count on economies of scale until you have arrived at scale.
[1] https://www.lazard.com/perspective/lcoe2019
[2] https://www.nuscalepower.com/benefits/cost-competitive
[3] https://news.ycombinator.com/item?id=24346808
[4] https://news.ycombinator.com/item?id=24061448