Earlier quoted context omitted.
Nuclear in this millennium is not competing with nuclear or other tech from the 1970s - it’s competing with newer technologies (solar, wind, batteries and gas turbines) which do not require 5 to 10 year huge civil engineering works. All these alternative technologies benefit from mass production in factories. While civil engineering does not get cheaper over time - not just for nuclear plant but all large infrastruct…
Oh ok, yeah I think we agree. the original quote I was responding to was "the (false) idea that what was holding back nuclear was perception of safety, rather than cost." I was simply trying to say that safety and cost are not independent. Safety is a massive reason why nuclear costs so much.
Smaller reactors bring nuclear power closer to fulfilling its promise
241–250 of 257 posts
Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#242Earlier quoted context omitted.
We have vastly moved the scientific frontier of modeling our energy systems since 2019. All those analyses find that renewable grids are far cheaper than if involving new built nuclear power. Here are two modern papers on the subject: https://www.csiro.au/-/media/Energy/GenCost-2025-26-Final/Ge... https://www.sciencedirect.com/science/article/pii/S036054422... I find it telling that you call it an ”economic problem”…
> https://www.csiro.au/-/media/Energy/GenCost-2025-26-Final/Ge ... It is interesting to see how large-scale nuclear is handled. 120% and 60% increase in cost for FOAK and NOAK (Table 2-1), plus no learning rate for nuclear construction beyond that (Table C.2). Interest rates during construction unfairly penalise nuclear as "GenCost uses the simplest way which is to increase the capital cost by the assumed discount ra…
GenCost has an amazing FAQ section you evidently either ignored, or did not peruse.
For example here they discuss economic life vs operational life, when you live in reality rather than grasping for straws:
> Why is the economic life used in LCOE calculations instead of the fulloperational life?
> The LCOE calculation converts all upfront and ongoing costs to annual costs which is then divided by annual production. The capital cost component of a technology is converted to an annual repayment to the debt and equity providers. The annual repayment amount is determined using the economic life and the weighted average cost of capital. The economic life is shorter than the asset life for some technologies such as coal, nuclear and hydro. Some stakeholders have queried why this is so.
> Debt and equity providers require a shorter payback period than the total asset life for some technologies to avoid the risk that part of the equipment might fail or might need new investment (sometimes called refurbishment or extension costs) to keep operating safely and reliably. To determine the economic life, debt and equity providers might look to the warranties provided with the equipment. They might also look at the typical timing of refurbishments or life extensions for that technology. The economic life is an input provided by the engineering firm that AEMO commissions each year as an input to GenCost.
> Some stakeholders suggested that coal and nuclear could access special financing arrangements to move the economic life closer to the asset life. However, our preference is not to introduce special arrangements for technologies where there is limited Australian evidence. A common approach to the LCOE calculation is important to maintain comparability. The 2024-25 report does explore the impact of longer capital recovery periods in Section 2. It finds there is no significant benefit from the longer operational life of nuclear relative to shorter-lived technologies whose costs have been falling over time.
Even looking at China and South Korea they see essentially zero learning effects across plants after the FOAK build. Small ones at the same plant.
Crying about FOAK vs NOAK is not even close to solving the absolutely stupidly large subsidies new built nuclear power needs.
Again with the loaded terms. Sad. The market is limited until for example Jevons paradox expands it. Which will never happen with new built nuclear power due to how expensive the electricity is, that leads to energy poverty for generations instead. But I digress.
Look at Texas or California. About all new renewable projects in those markets are coupled with storage.
What you call cannabilisation, and try to paint like the end of the world, is simply the market working. Now pure renewable projects aren’t enough, instead you need to sell the electricity when the consumers demand it.
In just a year or two storage has massively smoothed out the price swings in Texas.
But again, that would require curiosity rather than desperately trying to poke holes the study already answered.
Why are you so afraid of renewables and storage?
Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#243Earlier quoted context omitted.
'Fuel efficiency' is not the bottle neck to getting more clean energy on the grid, scale is. Waste? grind it up, vitrify it, bury it in an abandoned coal mine or something. People get more radioactivity from a coal power plant than they will ever get from properly handled nuclear waste.
It sure is. If the world were nuclear powered (all energy, not just grid) with burner reactors, estimates of uranium resources (not reserves) at up to 3x the current price would last about five years. A fully nuclear world needs to use nuclear fuel efficiently, which means breeder reactors.
Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#244Earlier quoted context omitted.
It sure is. If the world were nuclear powered (all energy, not just grid) with burner reactors, estimates of uranium resources (not reserves) at up to 3x the current price would last about five years. A fully nuclear world needs to use nuclear fuel efficiently, which means breeder reactors.
...and that's not a scenario that anyone is talking about employing with nuclear. We need enough for baseline load. Being able to build small modular reactors would give us scale that would help cut through the regulatory cost. By the time this crop of current reactors need to be decommissioned, we'd probably have dirt cheap grid storage figured out and could move away from them, but in the mean time, we need all the…
Nuclear really either goes big or it goes home. And you're saying it won't go big.
Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#245Earlier quoted context omitted.
They have 36-38 reactors under construction today [1]. I think that’s a bit more than just keeping the wheels turning [1] https://www.eia.gov/todayinenergy/detail.php?id=67746
Which works out to about 4 per year. And most of them are under 1GW.
Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#246Earlier quoted context omitted.
> https://www.csiro.au/-/media/Energy/GenCost-2025-26-Final/Ge ... It is interesting to see how large-scale nuclear is handled. 120% and 60% increase in cost for FOAK and NOAK (Table 2-1), plus no learning rate for nuclear construction beyond that (Table C.2). Interest rates during construction unfairly penalise nuclear as "GenCost uses the simplest way which is to increase the capital cost by the assumed discount ra…
Now you’re desperately trying to rationalize new built nuclear power. GenCost has an amazing FAQ section you evidently either ignored, or did not peruse. For example here they discuss economic life vs operational life, when you live in reality rather than grasping for straws: > Why is the economic life used in LCOE calculations instead of the fulloperational life? > The LCOE calculation converts all upfront and ongoi…
>For example here they discuss economic life vs operational life, when you live in reality rather than grasping for straws:
It's essentially just saying the market can't think long term enough leading to drastic differences in your calculations. But hence it's typically governments pushing these projects forward.
>The market is limited until for example Jevons paradox expands it. Which will never happen with new built nuclear power due to how expensive the electricity is
But it did happen for nuclear power in the past. Now you see essentially the opposite.
>Why are you so afraid of renewables and storage?
I'm not. I think it's a great set of technologies. But I think if one tries to get to 100% everywhere one's going to stub their toes on the scenarios where it's not all roses. Why? Because the storage part is hard at scale in a lot of places and the intermitency more pronounced. In Texas and Cali are incredibly sunny places in the south of the US. Silicon valley where it's already an issue gets 3 times as much sunshine hours during winter as let's say berlin and those hours are far less usefull.
>Crying about FOAK vs NOAK is not even close to solving the absolutely stupidly large subsidies new built nuclear power needs.
Is this not intentionally sidestepping the ludicrous amount of subsidies that have been handed out to renewables in aggregate?
Berlin would need to overproduce insane amounts in summer to handle it's winters.
Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#247Earlier quoted context omitted.
Now you’re desperately trying to rationalize new built nuclear power. GenCost has an amazing FAQ section you evidently either ignored, or did not peruse. For example here they discuss economic life vs operational life, when you live in reality rather than grasping for straws: > Why is the economic life used in LCOE calculations instead of the fulloperational life? > The LCOE calculation converts all upfront and ongoi…
Not him but. >For example here they discuss economic life vs operational life, when you live in reality rather than grasping for straws: It's essentially just saying the market can't think long term enough leading to drastic differences in your calculations. But hence it's typically governments pushing these projects forward. >The market is limited until for example Jevons paradox expands it. Which will never happen…
That seems absolutely insane.
Jevons Paradox did not happen for nuclear power. What happened was crazy cost overruns, cancellations and the industry collapsing into its current state.
Who cares if we get to 95%, 97, 99% or 100% carbon neutral electricity when we still need to decarbonize agriculture, aviation, chemicals, industry, construction and so on?
Don't let perfect be the enemy of good enough. Transition that final firming to whatever carbon neutral sources we land on when their emissions matter in the late 2030s and 2040s.
We need to optimize decarbonization per dollar spent with the shortest time to market.
You do realize that renewable subsidies are being phased out all over the world? They aren't needed anymore. Complaining about "equality" because your desired solution didn't deliver in time is a kindergarten level argument.
We've spent the past 70 years subsidizing nuclear power. It just never delivered on its promise.
The relevant question is: Where does Germany spend the next €100 billion today to avoid the most emissions?
And that is certainly not new built nuclear power.
Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#248Earlier quoted context omitted.
Not him but. >For example here they discuss economic life vs operational life, when you live in reality rather than grasping for straws: It's essentially just saying the market can't think long term enough leading to drastic differences in your calculations. But hence it's typically governments pushing these projects forward. >The market is limited until for example Jevons paradox expands it. Which will never happen…
The flip side is that what you are saying is that nuclear power will be commercially viable into the 2100s. And betting the house on that. While knowing that the electricity they provide is expensive enough to lead to energy poverty for generations. That seems absolutely insane. Jevons Paradox did not happen for nuclear power. What happened was crazy cost overruns, cancellations and the industry collapsing into its c…
What are you on about?
>Jevons Paradox did not happen for nuclear power. What happened was crazy cost overruns, cancellations and the industry collapsing into its current state.
And the opposite happened in the past whilst europe was building bunch more of them.
>Who cares if we get 95%, 97, 99% or 100% when we still need to decarbonize agriculture, aviation, chemicals, industry, construction and so on?
Funny you say that when some of those are significantly harder. Are you going to turn on steel plants only in summer? Do you think that might have some effect?
>You do realize that renewable subsidies are being phased out all over the world? They aren't needed anymore. Complaining about "equality" because your desired solution didn't deliver in time is a kindergarten level argument.
You should tell my government and the neighbouring governments.
>We've spent the past 70 years subsidizing nuclear power. It just never delivered on its promise.
It did exactly that?
>The relevant question is: Where does Germany spend the next €100 billion today to avoid the most emissions?
it has spent €700 billion to $1 trillion on the energywende (a metric which doesn't properly include a lot of private investment) and ends as one of the worst emitters in europe whilst deindustrialising due to high energy prices. They jerk eachother off about how high their renewables share of the economy is every summer and then import and fire up the browncoal and gasplants again troughout the other seasons. When that solar panel is producing a 10th of it's average summer output (already below the capacity everyone loves to roll with for articles) in winter there's only one big winner possible. People like to point out how france's electricity production is subsidised when they come out looking good even when the gov intentionally puts a stick in it's wheels by essentially forcing it to subsidise pricing to competition.
Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#249Re: Smaller reactors bring nuclear power closer to fulfilling its promise
#250Earlier quoted context omitted.
Not him but. >For example here they discuss economic life vs operational life, when you live in reality rather than grasping for straws: It's essentially just saying the market can't think long term enough leading to drastic differences in your calculations. But hence it's typically governments pushing these projects forward. >The market is limited until for example Jevons paradox expands it. Which will never happen…
The flip side is that what you are saying is that nuclear power will be commercially viable into the 2100s. And betting the house on that. While knowing that the electricity they provide is expensive enough to lead to energy poverty for generations. That seems absolutely insane. Jevons Paradox did not happen for nuclear power. What happened was crazy cost overruns, cancellations and the industry collapsing into its c…
They could spend much less and restart some nuclear. https://www.radiantenergygroup.com/reports/radiant-energy-gr...
> You do realize that renewable subsidies are being phased out all over the world?
CfD is going strong in the UK; it seems about the only way of deploying it, given the revenue uncertainty associated with market saturation/cannibalisation.
Denmark required CfDs too. https://windeurope.org/news/successful-danish-offshore-wind-...
Of course, other subsidies exist. Feed in tariffs. Transmission charges. Capacity and ancillary service payments to provide services that solar/wind do not.