Wind and Solar vs Coal, Gasoline, Nuclear

I have never seen any analysis of the costs of nuclear energy that accounted for the many long term externalities of that technology. It's like they think once it isn't specifically their problem, it's not a problem. Or they realize that storing and securing dangerous waste until the end of time is hard to price, so they don't.
Try checking the Nuclear Waste Policy Act (1982) which established the Nuclear Waste Fund, built up by a tax on electricity generated by Nuclear power plants and controlled by Congress.
 
This is where your idealism shines through and highlights your lack of comprehending the real situation.
”Generation” ..is only a small part of the costs incurred to provide a reliable supply to the consumers ( who pay the bills).
Once the additional costs of transmission, storage, back up, stabilisation, life cycle, etc ,( convieniently minimised or ignored in the LCOE figures ), are included ,it is a very different picture.
for a more realistic comparason the “Full SystemLevelised Cost” is a good guide.

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Unfortunately, this study does not contain any calculations, but simply asserts these figures as facts. However, it is quite interesting to see that nuclear energy seems to be cheaper in Germany than in Texas even though there are no more nuclear power plants in operation in Germany. I would be really interested in real numbers, but this paper is obviously not even worth the paper it is printed on

Here is another source worth reading
Fossil Fuel Interests Ramp Up Their "Solar Makes Electricity More Expensive" Falsehood - CleanTechnica
I was curious about that study, which was done by Robert Idel when he was a Ph.D candidate at Rice. It just so happens that Rice is in Texas where the electrical grid is operated by ERCOT. Readers may recall that a freakish winter storm paralyzed the Texas grid in 2022 — mostly because the pumps for the pipelines that provided methane to thermal generating stations failed. Afterwards, prices for electricity ballooned to astronomical heights and a close reading of Idel’s “study” shows those are the numbers he used to support his argument. It may be helpful to know that Idel, Ph.D in hand, later put his expertise in grid economics to become the director of auction economics for Tripadvisor. It may also be helpful to know that while Energy may be a peer-reviewed publication, the link Idel posted goes to a study with the words “Preprint — Not Peer Reviewed” on every page. Hmmm.
 
In this Finnish study, you can find some interesting information. Finland has started a new nuclear powerplant in 2023 and has a plan for the storage of the nuclear waste also.
The figures say, nuclear power is not cheap at all, but is was the decision of the finnish people, that nuclear is better than fossils 🤷‍♂️
The power plants are driven by a non profit organisation, the principle is called "Mankala model"


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The source indeed makes assumptions:
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An 1.6GW EPR nuclear powerplant costs at least 13,2 billion€ without dismantling costs. This is at least 8250€/kW, but only if it was built altready, new ones will be more expensive as equipment prices have risen in the meantime. Hinkley Point C will cost around 16250€/kW according to EDF just as an example. On the other hand battery storage is below €100/kW on a megawatthour scale. So: The figures from the study are at least an order of magnitude away from reality.
Also i did not find any assumption about the length of the Dunkelflaute nor the reqired storage capacity
 
Hinkley C is considered an “outlier” on cost examples, due to the many delays and changes due to regulation changes etc.
More representitive examples are the recent 4 UAE Nuclear plants, built for a total of US$18.6 bn ( US$3,300/kW),.…
...or the just quoted Saudi projects of 16 plants totalling 22GW, for US$ 100bn (4,550 US$/kW)
… so that 6,317 USD/kW, doesnt look too far out.
 
A comparison of asking chatGPT to compare powering Australia (in creating 250TWh annually) using real world projects, this answer was generated by chatGTP a few months ago.

The main idea of it is a comparison of powering Australia over 60 years which is the typical modern expected life span of a nuclear power plant.. The only major power plant that lives longer than nuclear is hydroelectricity. Solar and windfarms have to be rebuilt/replaced every 20 to 25 years.

You can see the questions put and all the simple arithmetic to create the table of costs. You can look up the costs of these large energy projects as they are quite publicly disclosed costs and data.

Here is the shared chatGPT link for the table it creates.

ItemSolar PowerWind PowerNuclear Power
Reference ProjectTopaz Solar FarmShepherds Flat Wind FarmBarakah Nuclear Power Plant
Capacity per Unit550 MW845 MW5,600 MW
Capacity Factor27%22.7%89%
Average Output per Unit148.5 MW191.8 MW4,984 MW
Units Required192 units149 units6 units
Total Capacity Installed105,600 MW126,005 MW33,600 MW
Cost per Unit$3.75 billion AUD$3 billion AUD$36.6 billion AUD
Total Initial Cost (Power Plants)$720 billion AUD$447 billion AUD$219.6 billion AUD
Number of Replacements over 60 Years1 replacement (total of 2 installations)2 replacements (total of 3 installations)No replacements needed
Total Cost over 60 Years (Plants)$720 billion AUD × 2 = $1,440 billion AUD$447 billion AUD × 3 = $1,341 billion AUD$219.6 billion AUD
Battery Storage Required399,000 MWh399,000 MWhNot required
Battery Storage Cost$306.21 billion AUD$306.21 billion AUDNot required
Number of Battery Replacements over 60 Years3 replacements (total of 4 installations)3 replacements (total of 4 installations)Not applicable
Total Battery Cost over 60 Years$306.21 billion AUD × 4 = $1,224.84 billion AUD$306.21 billion AUD × 4 = $1,224.84 billion AUDNot applicable
Total Project Cost over 60 Years$1,440 billion AUD (plants) + $1,224.84 billion AUD (batteries) = $2,664.84 billion AUD$1,341 billion AUD (plants) + $1,224.84 billion AUD (batteries) = $2,565.84 billion AUD$219.6 billion AUD
Total Project Cost over 60 Years (Rounded)$2.665 trillion AUD$2.566 trillion AUD$219.6 billion AUD


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And here is the most recent comparison I have asked chatGPT to do, this is using the latest o3 model which is supposed to be the smartest at code and complex reasoning.


Also, if you look at the chatGPT log you will see I am able to get this table with little more than just a single large question.

The differences between this estimate and the one above are more different because the one below is all based on USD instead of AUD.
I haven't gone through to see if everything is correct, you will notice the variations are based on slightly different assumptions, for example the capacity factor of 35% is assumed for the wind farm in the table below, while it was only 22% for the projection above.
The other thing to realize is that this is quite overly fair to renewables (in my opinion) because you see how much space and transmission towers and land you need to cover to generate the same amount of total TWh as nuclear.
Realistically you would need to build dedicated supporting towns in-between these giant wind/solar projects, and the maintenance of these projects covering so much distance would have to be a big unknown cost extra.

In general this is what you get, nuclear wallops solar/wind+battery in powering Australia over a 60 year time frame. The table is created entirely by a pretty simple question to chatGPT, and it is all based from real world project data.

These tables that chatGPT generates reflect the conclusions I have come up with over 10 years ago when comparing renewables vs nuclear, and it is nice to see that we can put rather simple unbiased questions to chatGPT and see it generate similar answers to what I always saw when just looking at real world project data rather than theoretical "LCOE", which to me was just low IQ to believe as it is just what the sales people want you to believe over what the real world data presents.

The table below summarizes the key figures:

ParameterSolar (Topaz)Wind (Shepherds Flat)Nuclear (Barakah)
1. Capacity per Unit (MW)550 MW845 MW5600 MW (4 reactors @ 1400 MW each)
2. Capacity Factor (CF)25%30%90%
3. Average Output per Unit (MW)550 MW × 25% = 137.5 MW845 MW × 30% = 253.5 MW5600 MW × 90% = 5040 MW
4. Average Annual Output per Unit (TWh/year)137.5 MW × 8760 h ≈ 1.20 TWh/year253.5 MW × 8760 h ≈ 2.22 TWh/year5040 MW × 8760 h ≈ 44.2 TWh/year
5. Number of Units Required~208 units
(250 TWh / 1.20 TWh ≈ 208)
~113 units
(250 TWh / 2.22 TWh ≈ 113)
~6 units
(250 TWh / 44.2 TWh ≈ 5.65 → 6)
6. Total Installed Capacity (MW)208 × 550 MW = 114,400 MW113 × 845 MW = 95,485 MW6 × 5600 MW = 33,600 MW
7. Total Energy Production Over 60 Years (TWh)250 TWh/year × 60 = 15,000 TWh2.22 TWh/unit × 113 units × 60 = ~15,060 TWh44.2 TWh/unit × 6 units × 60 = ~15,912 TWh
8. Cost per Unit (USD)$2.5 billion$2 billion$25 billion
9. Total Initial Project Cost (USD)208 × $2.5 bn = $520 bn113 × $2 bn = $226 bn6 × $25 bn = $150 bn
10. Replacement Costs Over 60 YearsLifespan = 25 yrs ⇒ Need 2 extra rebuilds (at years 25 & 50)Lifespan = 20 yrs ⇒ Need 2 replacements (at years 20 & 40)Lifespan = 60 yrs ⇒ No replacements
Replacement total = 2 × $520 bn = $1.04 tnReplacement total = 2 × $226 bn = $452 bn$0
(Generation Only) Total over 60 Years (USD)$520 bn + $1.04 tn = $1.56 tn$226 bn + $452 bn = $678 bn$150 bn
11. Total Storage Costs (USD)$800 bn (battery replaced every 15 yrs)$800 bn (battery replaced every 15 yrs)$0 (no large‐scale storage needed)
**Total Project Costs over 60 Years (USD)**$1.56 tn + $800 bn = $2.36 tn$678 bn + $800 bn = $1.48 tn$150 bn
12. Land Area Required (km²) per Unit~25 km² for 550 MW~78 km² for 845 MW~5 km² for 5600 MW
13. Total Land Area Required (km²)208 × 25 = ~5200 km²113 × 78 = ~8814 km²6 × 5 = ~30 km²
14. Average Lifespan (Years)252060
15. Cost per MWh over 60 Years (USD/MWh)$2.36 tn / 15,000 TWh = $157/MWh$1.48 tn / ~15,060 TWh ≈ $98/MWh$150 bn / ~15,912 TWh ≈ $9–$10/MWh
 
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The table below summarizes the key figures:
Why didn't you quote the last sentence of the summary?

However, factors not included here (such as fuel costs, decommissioning, waste management, regulatory/social challenges, financing risk, and evolving technology costs) can have a major influence on real‐world feasibility and economics

Why do you ask ChatGPT? Why should ChatGPT be more precise, than all the scientific studies that are done on this topic already?

I've added this simple question to your ChatGPT query ;):
What would be the cheapest energy mix, if you consider all power sources and storage techniques?

The cheapest energy mix will depend on various factors, including capital costs, operational costs, efficiency, geographic factors (solar and wind potential), and storage requirements. Based on real-world data, here's a breakdown of how an optimal energy mix might look:

Key Considerations:

  1. Solar Power: High initial capital cost but low operational cost. Energy storage is needed for nighttime and cloudy days, which adds cost.
  2. Wind Power: Similar to solar, wind has low operational costs but requires substantial land area. Energy storage also needed for fluctuations.
  3. Nuclear Power: High capital cost, but very low operational costs and high capacity factor. No storage required since it provides constant baseload power.
  4. Hydropower: High initial cost but very low operational cost. It can provide storage in the form of pumped hydro or reservoirs.
  5. Battery Storage: Expensive but essential for balancing renewable energy production when it exceeds demand or during low generation periods.
  6. Natural Gas: Although expensive and polluting, it can provide backup for renewables when energy demand spikes.

Ideal Mix for Cost Efficiency:​

  • Primary Power Sources: A combination of solar, wind, and nuclearis likely to be the most cost-effective over time, based on the following:
    • Solar and Wind: Cheap to operate once installed, and provide clean energy. However, they require significant storage to ensure a constant supply, which adds costs.
    • Nuclear: Provides stable, 24/7 power and can act as baseload, reducing reliance on fossil fuels. It’s cost-effective over a 60-year period due to low operational costs after high initial investment.
  • Storage: With the integration of battery storage, excess energy generated by solar and wind during peak production times can be stored and used during demand spikes or low production times.
  • Natural Gas or Hydropower (in specific regions): Can be used as backup for emergency situations but should be minimized to reduce emissions and costs. Hydropower is viable if geographically feasible.

Potential Cheap Mix:​

  1. Solar + Wind (with Battery Storage):
    • Solar and wind complement each other, providing energy across a wide range of conditions.
    • Storage can smooth out fluctuations.
    • Lower cost per MWh in sunny and windy regions.
  2. Nuclear + Solar/Wind:
    • Nuclear provides consistent baseload power.
    • Solar and wind provide the additional capacity when conditions are favorable.
  3. Hydropower (where available) + Solar/Wind + Nuclear:
    • If there's access to large-scale hydropower, this can provide additional storage and stability to the grid.
By combining these sources, we can minimize reliance on expensive, polluting backup solutions like natural gas while maximizing the benefits of each renewable and low-carbon option.
 
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Why didn't you quote the last sentence of the summary?
The whole chatGTP log is there, if there is anything of interest then it's there to read.

Why do you ask ChatGPT? Why should ChatGPT be more precise, than all the scientific studies that are done on this topic already?

Because people lie, and most people who put out claims against what is in the table above usually have a financial interest in renewables and don't care about factual math based on real world projects.

The goal is that as AI improves to be god-like (with Trump giving chatGTP $500billion), it will eventually become the norm to ask it to compile a verifiable table for energy comparison, just like how chatGPT is now taking away most people's traditional Google search activities.

I've added this simple question to your ChatGPT query ;):
Most countries are going either or without nuclear, so asking about "mixing" makes little sense, especially when the cost of renewables keeps pushing up everyone's electricity bills because their real cost is coming through due to it being part of the real world rather than theoretical claims.

I have had a fair amount of experience posting my entirely AI generated table based on a simple question and the responses of those who don't like its results.
Most people who don't like the data presented post their own claims of output from chatGPT and NEVER share the chatGPT chatlog as I have, no one should be interested in "theoretical" data and chatGPT outputs that no one can verify themselves, the "share" button is very easy to use.

The results generated in the table above are just simple arithmetic based on real world energy project data, but instead of calculating them manually we can just ask AI to do it, for people that want to spread the renewables lies then it appears to be upsetting for them.

None of that table of costs etc should be a surprise to anyone who is familiar with the real world data, but remarkably it seems to shock a lot of people who get all their knowledge about energy generation from people that want to sell wind/solar.
 
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I haven't gone through to see if everything is correct, you will notice the variations are based on slightly different assumptions

This is the problem with chatGPT, it could be completely or partially wrong, you always need to verify information before posting.
The problem is that wrong information can waste other people's time.
Always vet and confirm!
 
Most countries are going either or without nuclear,
Please quote sources, if you post this kind of postulation. There is not a single country, that uses nuclear power as the only power source. Nuclear power has only a very low part of the overall worldwide electricity production.
You should not believe the figures from the nuclear fanboys ;)

No company, that wants to earn money, will build a nuclear power plant. They will never get a return of investment, as the produced kWh will be much too expensive, if you consider all costs (that your ChatGPT result ignores, as it's written in the summary :whistle:). We had that discussion on the German forum a few weeks ago on the example of a Finnish nuclear power plant.

It's absolute nonsens to use batteries for storing electricity for a long term. As long as we have no better solution, gas peakers will have to fill the gap. As ChatGPT suggests for the cheapest energy mix ;)
 
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I suggest you do some research. Excluding all subsidies and other sources of cost bias, INCLUDING the cost of finance (build, legalities, land, connections) Solar energy is the *cheapest* source of new power generation right now. It's also becoming cheaper over time, something that's not true of many other sources of watts. That's the primary driver of the exploding use of solar (see graphs above), it's just cheaper. All its other advantages are secondary benefits, lack of emissions, ease of approval, public approval etc all make it a no-brainer but the real decisive shift towards solar is that it costs less than coal, gas, nuclear etc.

Regarding its 'paltry' output - are you kidding me? Are you incapable of understanding that small numbers can add up to big numbers?

It takes over 20 years to build new nuclear in the western world, primarily driven by risk averse approval bodies (understandable given the massively negative view on nuclear by the public). In the 15 odd years before you even begin construction in earnest on a nuclear plant you can build out a LOT of 150MW solar facilities, reaping the benefits of incremental efficiency enhancements and ever reducing costs throughout that period, producing a return the whole time.

Big, centralised generation is a dead end topology. It's not going to be relevant in a world where every home and many commercial buildings can become energy neutral and the amortized cost of doing so is LESS than the ongoing expense of purchasing power from conventional providers still seeking to reach break even on BILLIONS invested into legacy power plants. You're witnessing the start of a wave of energy disruption that will have wide reaching effects. Savvy business people will evaluate the business case of big centralised development, it won't stack up and they won't do it. You're already seeing this shift - you'll be seeing a lot more big projects get cancelled.

There is a LOT of land between cities, in areas undesirable for conventional development in almost every country. The area to power our world is not an issue, even at current power density. Even excluding the enormous tracts of unused land, just within urban environments is an enormous about of surface area ripe for harvest (and then nearby consumption)

The entire planet is solar powered - why not avoid the rube goldberg machine of birth, death, time and then combustion if you can just harness that original energy source in its raw form?

Regarding the age old objection, 'the sun doesn't shine at night hurr durr' - Elon Musk has proven that storage is economically feasible, ecologically sound and commercially viable *right now*. With further economies of scale and continuous improvement of the technology that's still in its infancy, efficient storage will go hand in hand with efficient collection. There's no need to transfer energy thousands of miles for consumption elsewhere - the sun shines everywhere. There's a happy middle ground between scale and complexity of deployment, but that middle ground sure as shit isn't producing power in an entirely different country and then stringing UHV transmission lines across the continent (or even ocean!).

Back on topic - the model 3 looks great for a car that packs a big interior in a relatively small envelope (by american standards anyway). I'm looking forward to taking delivery of my one some time next year.

I'm keen on the upgraded interior, all wheel drive, autonomous driving, supercharging and whatever the top shelf performance options work out to be. I'm expecting that's going to probably double the 'base' $35k.

Has he..?
This is not the view of everyone.


IMHO using solar etc to take CO2 etc out of the air and put it back in a gas tank needs serious consideration,
Especially for transport where 68% of the fuel is burned overcoming inertia/weight and 98% of travel is Urban stop-go.
ie: Batteries-motor cannot yet win out over fuel tank-ICE in power to weight.
2 Fundamentals of Fuel Consumption | Assessment of Fuel Economy Technologies for Light-Duty Vehicles | The National Academies Press

And no; regen does not win out against lightness as it's not 100% efficient.
 
And here is the most recent comparison….
Even those comparisons do not appear to include any cost for the additional and uprated transmission infrastructure required for the “Renewables” options.
Wind , Solar, and storage (batteries, Pumped Hydro, etc) are all “distributed” sources, located to best suit wind and solar harvesting. That by itself dictated significant extra transmission infrastructure, much of it needing to be seriously overrated to cater for “peak” generation loads rather than the CF rated output.
And In the case of storage facilities, those transmission systems would need to be bidirectional at those peak load levels !
None of those are costing that can be ignored, …as we are now finding out in Australia together with the land aquisition ecological and social impacts .
Nuclear, Gas, and Coal, generation can be effectively inserted into existing transmission and distribution networks with minimal disruption other than normal maintenance and replacement.
 
So this thread has been going on for 8 years, have we figured out the ideal power source yet? 😅
 
have we figured out the ideal power source yet?
“Ideal” is a very specific definition.
I doubt there will ever be an ideal generation source,.. everything is a compromise
Hydro would be high on the list, but it is not available universally, and has some ecological side effects in those areas it can be used.
Nuclear would be a more practical option, especially if the Thorium and SMR systems become proven, and waste issues can be resolved.
personally, i do not consider intermittent , weather dependant, sources such as Solar and Wind , as being remotely close to ideal.
 
Hydro would be high on the list, but it is not available universally, and has some ecological side effects in those areas it can be used.

True

Nuclear would be a more practical option, especially if the Thorium and SMR systems become proven, and waste issues can be resolved.

What about the fact that it's more expensive than renewables? we don't see costs going down, either.

personally, i do not consider intermittent , weather dependant, sources such as Solar and Wind , as being remotely close to ideal.

What if battery technology continues to improve, leaving the intermittency as a non issue?
 
What about the fact that it's more expensive than renewables? we don't see costs going down, either.

And that's only the direct expenditure for nuclear power. When you include externalities, security, non-proliferation (and proliferation, to be fair), plus the costs and opportunity costs of perpetual waste storage, it would be the most expensive form of generation even if it were free in direct cost terms.
 
I think there exist some kinds of reactors that don't produce outputs useful for producing weapons.
Why can't waste storage be inexpensive, we as a species have perfected all kinds of drilling techniques. Put that stuff as far away from water as possible.

Probably the real reason we haven't seen a nuclear revolution is because the expense of doing it right is still too high.

IE: it's down to economics
 
What if battery technology continues to improve, leaving the intermittency as a non issue?
Doesn't need to be chemical batteries, I'm always crossing my fingers that someone wants to put more R&D into flywheel energy storage. It's unlikely, but it'd be cool to have.

Pumped hydro.

Not "energy vault" type gravity batteries, they're just impractical techbro fads. This video makes me laugh every time:
 
What about the fact that it's more expensive than renewables?
Didn’t Beasties posts sway that view at all ?
.. or the introduction of Full System Costsings conpared to the LCOE data ?.
As for batteries to back up the intermittency of Wind and Solar,… it will require a complete revolution in storage technology before any semblence of capacity and cost become realistiic on a significant scale.
 
I saw that post, but the information isn't vetted so do you have a better source for me that includes some great breakdowns of the costs?

Because right now here in the USA, all nuclear = more expensive than renewables on whrs/kg per dollar value.

I'll read your source if you can find me a good one.
 
Because right now here in the USA, all nuclear = more expensive than renewables on whrs/kg per dollar value.
whrs/kg per dollar. ?……an interesting metric !
i dont know you source for that conclusion, but i suspect it is not a comprehensive review of the full costs for renewables.
IE : any allowance for back up when the wind or sun cannot meet the demand (gas peakers, batteries, hydro, etc ).

Have a look at this to get a broader view..
 
I think there exist some kinds of reactors that don't produce outputs useful for producing weapons.
Thorium cycle reactors. To date, they're (lots) more expensive yet and much less reliable. So, yeah... no. Cheaper to go clean or do without.
 
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