• eicker@lemmy.worldOP
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    4 days ago

    Turns out the sun has a few competitive advantages over nuclear: free fuel, no radioactive waste, and it doesn’t need a decade of permits before it starts shining. The real bottleneck now is grids and storage. Imagine losing the energy race to a giant fusion reactor 93 million miles away. 😎

    • acosmichippo@lemmy.world
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      4 days ago

      The real bottleneck now is grids and storage.

      And turns out nuclear has a few competitive advantages over solar. They are both great and serve different purposes.

      • eicker@lemmy.worldOP
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        4 days ago

        Nuclear’s big selling point is that the sun goes down. Batteries have apparently missed that memo: they keep getting cheaper, better, and more efficient. Storage won’t solve every grid problem overnight, but pretending today’s limitations are permanent is a strange way to plan tomorrow’s energy system.

        • acosmichippo@lemmy.world
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          4 days ago

          another big selling point of nuclear is it’s easy to drop in at old coal plants that already have grid connections ready to go.

          pretending today’s limitations are permanent is a strange way to plan tomorrow’s energy system.

          how long are you willing to wait for perfect energy storage?

          obviously battery tech will improve, but the point is we cannot afford to assume that problem will be solved 100%, meanwhile experiencing more and more irreversible damage to our environment. We need to put our eggs into all clean energy baskets to get off CO2 as soon as possible. Not whenever battery tech happens to be ready to handle everything.

          • ByteJunk@lemmy.world
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            4 days ago

            “it’s easy to drop at a place that has grid connections”

            Funny, because solar or literally any other plant will also benefit from having existing connections, and all of them are easier and cheaper to build than nuclear.

            Nuclear is dead but for niche applications.

          • eicker@lemmy.worldOP
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            4 days ago

            Nobody’s asking us to bet on miracle batteries: Wind and solar paired with storage are already cheaper than building new nuclear. Reusing a coal plant’s grid connection doesn’t magically make a reactor cheap or quick to build. If speed and CO2 matter, follow the numbers, not the nostalgia.

            • gian
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              4 days ago

              Maybe cheaper in money terms, not others, first of all space.
              But how much would cost to build a solar farm with the same output of a nuclear plant, both on days and night ?

          • eicker@lemmy.worldOP
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            4 days ago

            No, in my world tomorrow’s grid uses whatever delivers reliable electricity at the lowest total cost: solar, wind, hydro, geothermal, storage, and yes, nuclear if it can compete. This isn’t a religion with approved energy sources. It’s an engineering problem with a price tag, and nobody gets bonus points for glowing in the dark.

            • Return_of_Chippy@lemmy.world
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              4 days ago

              Exactly, this is an engineering problem. You’re talking it like it’s an accounting one. Reliability, emergency use, redundancy, generating potential and universal scalability are the most important factors. Cost is a completely separate issue governed by separate factors, many of which are 100% artificial.

              • ByteJunk@lemmy.world
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                4 days ago

                You’re stringing worlds together at this point.

                Cost is the single largest factor in the deployment of new power plants, and solar is just impossible to match right now.

                You could spend literally decades and billions building a nuclear plant, or start deploying solar right this minute and immediately reap the rewards of that investment.

                It’s a no-brainer.

                • gian
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                  4 days ago

                  Cost is the single largest factor in the deployment of new power plants, and solar is just impossible to match right now.

                  I would say that even availability is an important factor, maybe more important then the mere price.

                • Return_of_Chippy@lemmy.world
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                  4 days ago

                  But it doesn’t need to be one or the other. The more diverse the grid the better. I’ll also say again, cost on both sides is mostly artificial anyway.

                  • ByteJunk@lemmy.world
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                    4 days ago

                    Again, you’re stringing words together.

                    Cost is a very real measure.

                    You could say that the numbers scribbled down on pieces of paper next to a dollar sign are artificial or miscalculated, but the invested manpower and resources and time (and a large number of other consequences) are all very real, and translate into a cost.

              • VAK@lemmy.world
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                4 days ago

                Dude, the cost is the final decision point after all those concerns are handled…

              • Hawke@lemmy.world
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                4 days ago

                “Glowing in the dark” refers to nuclear power sources. Hope this helps.

                • acosmichippo@lemmy.world
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                  4 days ago

                  yes i know that, genius. the point is that is not an argument people are using for nuclear. it’s a blatant straw man from someone clearly not engaging in a goood faith discussion.

                  • Hawke@lemmy.world
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                    4 days ago

                    That’s kind of the point; it’s not a straw man, it’s saying that the options should be considered on their merits not on irrelevancies. “There are no bonus points added to the scoring just because nuclear looks cool when it glows”

      • Quacksalber@lemmy.world
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        4 days ago

        Nuclear is simply incompatible with renewables, if the price tag is of any concern to you. Nuclear reactors take long and cost a lot to build, still aren’t cheap to operate if you include the infrastructure cost of getting, handling and storing the fuel, can’t respond to changing demand quickly and are centralized.

        Nuclear power plants need subsidies over their whole life, mainly to handle the risk inherent with nuclear fuel and the finincial risk of having to handle spent fuel for centuries to come. Nuclear power plants need to run at full power, which costs money every time renewables are pushing the energy price into the negatives. Nuclear power plants need a centralized power grid.

        Renewables work in exactly the opposite way. They are cheap to build and maintain, they are variable and decentralized. So to use renewables effectively, you need to build a decentralized grid and ideally on-premise energy storage.

        Renewable energy simply wins in terms of cost, risk-management and scalability. So the energy grid of the future will be purpose-built to accomodate renewable energy. Trying to force nuclear energy generation into that mix only makes sense, if you have a clear, non-monetary reason to do so, like enriching uranium for bombs. For strictly commercial use, nuclear power is dead.

        • gian
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          4 days ago

          Nuclear is simply incompatible with renewables, if the price tag is of any concern to you. Nuclear reactors take long and cost a lot to build, still aren’t cheap to operate if you include the infrastructure cost of getting, handling and storing the fuel, can’t respond to chaning demand quickly and are centralized.

          The fact is that the price tag is not the only factor.
          It is true that a 1000 MW nuclear plant cost about 10 times the equivalent solar field (about 6-9 billions for the nuclear plant Vs about 800 millions for panels) but at this point you use about 15 square Km to just match the output of the nuclear plant, with no storage, and only in the best case scenario.

          In a real case scenario the price tag of building a solar field that could replace a nuclear plant is probably not that different anymore.
          To produce the same amount of power in every condition you could not install the exact amout of panels, you need way more (double ? triple ?) with the associated costs and space requirements.
          And then you need batteries to be able to offer energy also at night and to store energy for the days when the sun is not enough to produce the energy required.

          I would say that to match a nucler plant a solar field would cost about half of it for the same power generation but with the additional problem that you need way more space, which itself is a cost.

          Nuclear power plants need subsidies over their whole life, mainly to handle the risk inherent with nuclear fuel and the finincial risk of having to handle spent fuel for centuries to come.

          We have nuclear power plants that uses less problematic fuel which is easier to handle and less risky.

          Nuclear power plants need to run at full power, which costs money every time renewables are pushing the energy price into the negatives.

          True, but when the renewables are not producing enough ?

          Nuclear power plants need a centralized power grid.

          Like a solar farm.

          Renewables work in exactly the opposite way. They are cheap to build and maintain, they are variable and decentralized. So to use renewables effectively, you need to build a decentralized grid and ideall, on-premise energy storage.

          No, they work in the exactly same way. What is different is that renewables can be made decentralized. Solar panels on the roof produce only for the house, not for the power grid (even if you can connect them to the grid to fill in the surplus).

          I think you are comparing a nuclear plant with the small panels you install on your roof but you cannot make such comparison.

          So the energy grid of the future will be purpose-built to accomodate renewable energy.

          As far as I remember, what was told me when I worked in the field was that power grids does not care about the source, only the power: a power grid do not care if the 10 Gw power it transfer comes from a nuclear plant, a solar farm or from a squirrel on a wheel.

          And the grid is already ready, we are already able (ok at least here) to send to the grid the surplus generated by the solars panels on the roof. And adding the batteries will not require anything done on the grid itself (at least this is what my collegues said).

          Trying to force nuclear energy generation into that mix only makes sense, if you have a clear, non-monetary reason to do so, like enriching uranium for bombs. For strictly commercial use, nuclear power is dead.

          What about being sure that a 5 days of bad weather cannot stop a society ?

          • Quacksalber@lemmy.world
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            4 days ago

            You are mixing up many different things.

            First, you don’t have to install the solar capacity in one huge blob. Solar farms also don’t have to be the only use of the land. You can still farm crops that like shade, you can hold cattle, build the energy storage right beneath the solar farm, a car park or what have you. There is also a lot of currently “wasted space”, such as roof tops or existing car parks. There are also swimming solar pannels that have the added benefit of keeping lake temparatures in check in the summer. You also have wind turbines that can contribute their fair share to the energy mix. So no, you don’t need to build huge over-capacity and you don’t need to bulldoze huge swaths of land to install solar. And the price to build solar and battery storage is still going down.

            Where are the nuclear plants that use “safer fuels”?

            Renewables are cheaper to build and run, meaning that renewable energy is always cheaper than nuclear power. You’d need to artificially limit the amount of renewables companies are allowed to build or subidize nuclear, otherwise renewables will price nuclear out of the market.

            No, solar farms don’t need centralized grids nearly as much as nuclear power does. What is much more important for renewables is monitoring the local grids, so they don’t get overwhelmed by people providing power to the grid with their solar pannels.

            And people already absolutely do provide power to the grid with their own solar pannels, you denying that just shows that you haven’t mich thought about/experienced local “grass roots” energy production. In Germany, the capacity of the local grids is one of two big hurdles renewable energy production is facing right now. Commercial and private energy producers are complaining that the utility companies are forcibly cutting their power plants from the energy grid to stabilize it.

            And like I said in other comments already, hydrogen/natural gas power plants are a much better fit to handle extended lulls in wind and solar.

            • gian
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              3 days ago

              First, you don’t have to install the solar capacity in one huge blob.

              We are comparing a nuclear power plant with renewables, it make sense comparing them this way.

              Solar farms also don’t have to be the only use of the land. You can still farm crops that like shade, you can hold cattle, build the energy storage right beneath the solar farm, a car park or what have you. There is also a lot of currently “wasted space”, such as roof tops or existing car parks.

              Partially true. but still, we are comparing solar with a nuclear plant not with a distributed system.
              Obviously you can make some use of the land under the panels but you still need the same surface if not more.

              There are also swimming solar pannels that have the added benefit of keeping lake temparatures in check in the summer. You also have wind turbines that can contribute their fair share to the energy mix. So no, you don’t need to build huge over-capacity

              You still need over-capacity unless you are planning to use some other sources during the night. If your needs is 1000 MW/h during the day and 300 MW/h during the night, during the day you need to generate the power you need and all the energy you will need for the night. It is the reason why if I put solar panels on my roof the system come with batteries.

              and you don’t need to bulldoze huge swaths of land to install solar.

              Yes if you want to make a comparison with a power plant, no if you talk about distributed installations (roofs and so on) but at this point you are comparing apples with oranges.

              And the price to build solar and battery storage is still going down.

              True, but this is the same as saying “some technology will solve the problem in the future”. What is the cost now to build a plant based on renewables source that can be a drop-in replacement for a 1000 MW nuclear power plant ?

              Where are the nuclear plants that use “safer fuels”?

              Thorium for one.

              Renewables are cheaper to build and run, meaning that renewable energy is always cheaper than nuclear power. You’d need to artificially limit the amount of renewables companies are allowed to build or subidize nuclear, otherwise renewables will price nuclear out of the market.

              As I said, cost is not the only factor. Renewables are cheaper, but less than you think when comparing the output, but they have other limitations: solar is good only by day and the generation highly depends on how much sun is out, now panels can produce even if not in optimal exposure but of course they produce less; wind turbines have a range of wind they can be used else they broke for example.

              You can combine them, it is the most intelligent thing to do honestly, but if you want to use only renewables you need to generate more power than you need and then store the surplus to be used when it rain or there is not (or too much) wind.

              No, solar farms don’t need centralized grids nearly as much as nuclear power does. What is much more important for renewables is monitoring the local grids, so they don’t get overwhelmed by people providing power to the grid with their solar pannels.

              Still, you are comparing a single nuclear plant with a distributed system.
              To the grid a nuclear power plant and a solar farm are no different: both introduce 1000 MW/h in the system.
              In both cases you have a single point of entry to the grid and what is behind this point is irrelevant: you can also have an army of hamsters on wheels.

              What are you saying is the obvious thing: if we had n-thousand entry point we need to monitor the grid but even this is not dependent on how you produce the power. If you connect to the grid n-thousand 1 kW/h gas generators you have the same problems.

              And people already absolutely do provide power to the grid with their own solar pannels, you denying that just shows that you haven’t mich thought about/experienced local “grass roots” energy production.

              In Italy we’ve been doing this for ages, at the time we were even paid to provide the surplus to the grid. It is nothing new to me.

              And like I said in other comments already, hydrogen/natural gas power plants are a much better fit to handle extended lulls in wind and solar.

              Maybe natural gas, not hydrogen at the time

              • Quacksalber@lemmy.world
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                3 days ago

                I’m not going to entertain the completely ridiculous and idiotic scenario, in which an energy provider is forced to install all solar capacity in one location. Solar’s biggest strength is its distribited nature and you want to take that away to make your comparison work?

    • kronarbob@lemmy.world
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      4 days ago

      Take Germany that has solar and wind combined production capacity between 4 and 5 time its needs in electricity. Yet, It can not cover its needs. If you cannot produce electricity to cover your needs, you are far from being able to store an excess of your production. The last solar farm Germany was building south of Berlin had an estimated efficiency of 10%… The capacity of the power grid isn’t a light issue, and it is far from being resolved.

      So before thinking about having a full working renewable power grid, you have to rely on a working mass production system. Germany choose coal and gas, which makes their emission of CO2 for producing electricity high during most of the year

      Now take France. It has a solid capacity of electricity based on nuclear. It is among the least CO2 emitter in the world to produce electricity. Now, if their energetic politics was a future oriented one, France would ramp up its renewable capacity while maintaining its nuclear capacity (so building new reactors to replace old ones) to not loose on stability.

      Nuclear isn’t the energy of the past, nor a nostalgic one. It is probably the most efficient mass production system for electricity we have to transitionning to renewable while not messing up the CO2 emissions.

      Not all countries have ideal solar exposition, nor constant wind… Not to mention that hydroelectricity requires land specifics advantages and geothermal energy isn’t an everywhere solution, as drilling can cause problems.

      There is no miracle solution, only partially satisfying ones.
      Most of the country that have a 100% or near 100% renewable power grid rely on hydroelectricity. Which is not achievable by all.

      It’s not a race between technologies, it is a race to find the most efficient way to produce low CO2 electricity… while maintaining the confort of people and factory productivity, because, you know… Shareholders are the most important thing in the world… Apparently…

      • AA5B@lemmy.world
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        4 days ago

        Searching for Germany, I see many articles on grid storage - basically at its infancy but exploding in popularity. I also see huge expectations on pumped hydro storage

        Seems like you’re arguing that we should stop building out these proven, low cost solutions in favor of dumping tons more money into a problematic technology that will take decades and billions of dollarseach

        • kronarbob@lemmy.world
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          4 days ago

          The hydro storage has the same problem than the battery storage. You have to build a reliable eletricity production that cover your needs before being able to store your excess.

          How much power can you store with hydro storage ? Do you have enough land/mountain to create the artifical lakes at different elevation ? Can you store enough energy to compensate the reduced production of solar power during winter ? For now, storage is either for short periode ,(days, maybe weeks, with batteries) or limited capacity (hydro pumping). If you are interested on storage technology you should look on the CO2 storage that Italy built lately.

          It is complicated to rely on yet to develop technologies to power an entire country. Some can, they should, other can’t, and have to rely on non renewable energy.

          I’ve written than Nuclear is probably the best way to produced decarbonated electricity while waiting for good solutions for the renewable energy. I’ve never said that we should stop developping renewable. While the world spend money on an energy and water consuming technoloy like IA, it would be way more intelligent to focuse all that money on developping renewable… Yet to produce solar panel, wind turbin, concrete, we still need fossile fuel or nuclear. So giving up on it would only make things more complicated.

          • AA5B@lemmy.world
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            3 days ago

            Time is the missing value here.

            • that disregards the massive time commitment needed to build out nuclear. When each plant takes over a decade to build and there is no ready supply chain, they can’t be mass produced, scaling out would take many many years
            • while also ignoring that even the fast solar buildout takes time. Even with ready supply chain, mass production, mature technology, we need to expect scaling out to take 20+ years. We may not have all the answers for storage yet but it’s all known technology and we have 20+ years to figure it out. It’s ok to lag behind solar a bit