First new US nuclear reactor in decades enters commercial operation in Georgia

We really don’t need any major breakthroughs beyond economies of scale to see sub 7c/kWh rates 24/7/365. People are already deploying 50% battery backed solar because it’s cost competitive vs both base load and peaking power.

Even in the summer in Texas, where we experience the largest demand fluctuations, minimum demand is around 60% that of peak demand. And this is indeed a good use case for rooftop solar, especially since it can be used to power A/C in the same building on which its mounted - I never said we should have zero solar power, just that it's infeasible to use for the primary source of electricity. Rooftop solar is indeed a good way to mitigate A/C power draw. But outside of summer peak and minimum power draw is only about 20% difference, and again the peak power is at night.

I don't doubt that nuclear power is expensive. But at least is feasible to build. "Feasible but expensive" is much better than "not feasible regardless of cost". Intermittent sources are only feasible in a grid backed by fossil fuel and hydroelectric sources that can flexibly respond to solar and wind's variation. Once you enter the realm of a predominantly renewable grid, this changes drastically. Storage at a scale anywhere close to what's required to smooth the intermittency of renewables is not even feasible regardless of cost. No amount of money is going to provision the amount of storage required to smooth out the daily fluctuations of solar, let among the seasonal variations of both solar and wind. Overproduction and HVDC connections only take you so far unless you're going to cross the Atlantic (which is also of dubious feasibility). Even just a few hours of storage is well outside of reach. Don't be misled by a handful of battery stations in the MWh scale: actually trying to providing 2 TWh of storage would cause prices to skyrocket because production cannot remotely fulfill that level of demand. Not to mention it'd kill electric vehicle adoption.

This is why most proposals for a primarily renewable grid involve a novel storage system. Will hydrogen, or compressed air, or giant flywheels deliver the required scale? Maybe, in the same vein that maybe deep-drilled geothermal power will deliver cheap decarbonized energy. Those are unknown factors in that one cannot assume will work out. Would you consider it a reasonable plan to assume deep-drilled geothermal will solve decarbonization? After, Iceland has used geothermal for decades, and we have lots of experience drilling for oil? This is how we ought to regard things like hydrogen electricity storage or ammonia: they're in the realm of possibility not feasibility.

Again, it's not a question of cost it's a question of what's even possible without an engineering breakthrough. Maybe we'll figure out a way to build storage at grid scale. And maybe we'll figure out geographically independent geothermal power. But both of those are things not presently within our technical capabilities.

> ...and take the plant offline for weeks to refuel etc, then things look much worse.

Nuclear has historically had the highest capacity factor of all generation sources [2]. This hasn't been an issue with existing generation sources with even more downtime, so why would it be an issue with nuclear?

1. https://www.deegesolar.co.uk/do_solar_panels_work_in_the_win...!

2. https://www.eia.gov/tools/glossary/index.php?id=Capacity_fac....

> The amount of heat delivered by a solar water heating system depends primarily on the amount of heat delivered by the sun at a particular place (insolation). In the tropics insolation can be relatively high, e.g. 7 kWh/m2 per day, versus e.g., 3.2 kWh/m2 per day in temperate areas.

Because of this, many solar thermal systems are supplemented by convention heaters.

> In winter, the percentage of your hot water heated by the sun drops to as low as 10-20%—as you might expect with short days and weak sun in December. That’s why practically every solar water installed in the US will be connected to a backup conventional water heater to ensure that your hot water needs continue to be met even in January.

https://www.aspessolarproducts.com/solar-water-heater/how-do...

Imagine a huge waterfall design, with the architects being part of a completely different company than the implementers, and months long turn around to get clarification on any aspect or to get the designers to sign off on the necessary changes for anything to happen.

People are not afraid to criticize the NRC, it falls out of people's mouth so easily. But if they are actually afraid of the NRC, why are they so willing to provide critique, but unwilling to suggest the exact things that are the problem?

More likely you have a bunch of substandard folks unwilling to take any sort of responsibility for their actions or for management and instead blame a third party.

Suppose that any one of these companies spent a tiny tiny fraction of their money of proposing changes to regulations that would allow them to build effectively? Why don't we see any sort of proposals like that?

As for nuscale, this is a perfect example of using the NRC as a scapegoat and being unwilling to look at the true source of their problems:

https://www.power-eng.com/nuclear/report-claims-serious-prob...

I am still waiting for some sort of example of the NRC layering on something unnecessary, after six years of begging people making the claim to produce one shred of evidence.