• Saik0@lemmy.saik0.com
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    1 year ago

    Months back I did a fairly exhaustive analysis on reddit.

    And yet you made simple mistakes like assuming that nuclear reactors only last 40 years?

    https://www.energy.gov/ne/articles/whats-lifespan-nuclear-reactor-much-longer-you-might-think

    As the average age of American reactors approaches 40 years old, experts say there are no technical limits to these units churning out clean and reliable energy for an additional 40 years or longer.

    When your assumption is flawed by literally a possible 50% (or more) of the nuclear reactors lifetime your evaluation is useless. Your numbers are useless without evidence or citation especially when you make easily disprovable assumptions from the get go.

    as large scale battery tech is skyrocketing of late.

    What magic technology have we invented? You realize that lithium ion batteries are 1980’s technology right? We haven’t made any significant advancements in battery technologies in decades. All we do is repackage it so we can charge/discharge them faster. That’s not capacity.

    Yes it’s in the green (capital-wise), by year 10-15.

    Yes, that’s what I said. Remember we’re in it for long term solutions. Not bullshit hand-wavy nonsense.

    Compare that to solar roofs, solar parking shades, windmills that can often be installed in “spare lots”, etc.

    Yes 100,000 little projects vs 1…

    And I’m not even Anti-solar… after all it’s literally just second-hand nuclear production… But it’s just that. Second-hand, and why settle for “Second” when we can harness first hand? I’m just not dumb enough to assume it’s the answer to all our problems.

    • abraxas@lemmy.ml
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      1 year ago

      And yet you made simple mistakes like assuming that nuclear reactors only last 40 years?

      No. No I didn’t. I was using the lowest life expectancy for nuclear because it steelmanned nuclear for my other critiques. You want to use longer ages, that means you’re prepaying 60% of that longer age at cost. I find it interesting that you called me out on trying to give nuclear more benefit. That said, IAEA holds with 30-40 year life expectancy on a nuclear plant so I think the steel-man I chose is acceptable.

      What magic technology have we invented? You realize that lithium ion batteries are 1980’s technology right?

      Lithium Ion batteries are being used at large scale now, sure. It’s dishonest to say the ones being built today for utility-scale power are 1980’s technology, just as it’s dishonest to pretend that nuclear power is what it was in the 1950’s. But there are also advancements in molten sand batteries, and even utility scale water energy storage is going down in price (though I believe it’s still slightly more expensive than nuclear).

      Yes, that’s what I said. Remember we’re in it for long term solutions. Not bullshit hand-wavy nonsense.

      So how is $140/MWH total cost of energy over the life of a nuclear plant “the long haul” over $77/MWH total cost of energy over the life of a nuclear farm? Do we need to discuss how that kind of math works? Building solar+battery plants, running them till EOL, rebuilding them from scratch and repeating several times is still **half ** as expensive as producing the same amount of energy with a nuclear plant until it reaches EOL.

      And considering that cost is effectively more like $1,000/MWH or more for the first few years, how exactly are we going to get carbon neutral any time soon by literally adding an order of magnitude to our costs?

      Yes 100,000 little projects vs 1…

      Sure. Being able to plop it down at a massively high price does have its uses. Note I said there CAN be appropriate uses for nuclear. Just not many of them. The price is just unreasonable. And very often, space isn’t really an issue. Those 100,000 little projects are still cheaper than that 1 project nuclear for the amount of energy created.

      And I’m not even Anti-solar… after all it’s literally just second-hand nuclear production… But it’s just that. Second-hand, and why settle for “Second” when we can harness first hand?

      For several reasons. First, the sun is in a state of nuclear fusion which is at least 4x more efficient than can be achieved with fission. Second, the sun is gonna burn whether we harvest that energy or not. Third, the most expensive part of a any nuclear power prospect is causing and containing it. We get to skip that step with solar.

      I’m just not dumb enough to assume it’s the answer to all our problems

      I guess I am “dumb enough”. Between the power created from the sunlight itself, and wind and hydroelectric power created indirectly by it. The numbers all work out.

        • abraxas@lemmy.ml
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          1 year ago

          Seems an odd question. Since I’m not sure what you’re getting at, my answer might or might not be of value.

          The only thing I know offhand about the breakdown is 60% of the total lifetime cost of electricity is in construction costs, a number that is disgustingly through the roof and why using nuclear power for the whole world is unfeasible. It’s that bad.

          The rest is “day to day costs” which are far lower with nuclear than other forms of energy. Which would be great if it didn’t cost so much to build a nuclear plant.

          • Getawombatupya@aussie.zone
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            1 year ago

            Countries with a lower PPP would get the lifetime cost closer to parity, if a handful of project experts etc are brought in at Western rates and local labour is used for the build and operation. If the federal system of government for that country streamlines the registration process while mandating key critical compliance steps (for instance, full test and verification on the containment system but not the light switch in the control room toilets, which I have read is an issue with the US regs) it would seem that non-us countries would be able to do nuclear cheaper per MWh.

            • abraxas@lemmy.ml
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              1 year ago

              Cheaper than $140, or cheaper than Solar? Someone just got back to me with claims of lower Nuclear numbers… and even in those claims, Nuclear simply could not get anywhere close to Solar.

        • PersnickityPenguin@lemm.ee
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          1 year ago

          Probably a third of that cost is tied up in NRA certification with 32 different federal and state licensing bodies, planning, EIS statements which average 6 years to write, and the political approval process.

          While you’re waiting those six to 10 years to get your project started, you’re going to see a construction cost inflation rate of what, 25 to 30%?

          • abraxas@lemmy.ml
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            1 year ago

            Care to substantiate that the red tape amounts to more than 100 years worth of the same MWH of solar? Or is that just your gut feeling?

            Also note, even if the construction cost were 30% inflated, nuclear is still losing handily to solar by the figures I cited.

            • PersnickityPenguin@lemm.ee
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              1 year ago

              I was half joking, although cost escalation would actually account for a major portion of the cost increase.

              We did a new building project. Started during 2021, and by the time we received the final bids costs had increased 50%. All within 6 months. We’re at 10% cost escalation this year alone.

              Imagine 6 years of that.

              However, it also sounded like these companies had no clue what they were doing. Similar to California High Speed Rail.

              • abraxas@lemmy.ml
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                1 year ago

                Of course. That happens. Luckily, we have countries like China with less red tape to use to measure. They’ve been building a lot of nuclear and solar. Their end-to-end solar looks like around $750M per GW (possibly including storage? Not sure. About $2.2B for a 3.3GW plant). Looks like they’re spending about $5B per GW of nuclear.

                Sorry I don’t have the solar reference anymore. I was building a math equation for another comment and realized they weren’t talking price, so scrapped it without thinking.

                Since those numbers seem to match US figures, I think people in the Western World forget that a lot of bid cost increases or “escalations” are due to the fact that companies try to low-bid to win the contract, knowing every little inconvenience will require a cost increase. It evens out more than people want to admit.

                • PersnickityPenguin@lemm.ee
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                  1 year ago

                  Yeah I hate dealing with that. Then they send back every design decision to be reopened, resulting in literally years the meetings to decide which source for which equipment, all the while the Costco up to the point where if we just built a damn thing 5 years ago then it would have been cheaper than trying to go with a low bid now. Not to mention years of delays.

                  • abraxas@lemmy.ml
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                    1 year ago

                    Agreed. It doesn’t end up saving a penny, but it definitely leads to greased wheels along the way and richer politicians.