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[-] JustEnoughDucks@feddit.nl 111 points 6 days ago* (last edited 6 days ago)

Here in Belgium there used to be big government subsidies for solar panels 5-10 ago.

Now the same wattage battery + solar setup without any government subsidies is a good chunk cheaper than that time with the large subsidies.

Pretty cool and shows the power of government renewables subsidies. A huge percentage of houses in Belgium have solar panels now.(and electricity still costs 0.30€/kWh average because of fossil fuel energy lobbies)

Now that there is a local industry around it, most renovations and almost all new builds include them.

[-] sirboozebum@lemmy.world 22 points 6 days ago

4 million households in Australia have solar panels.

They are great value.

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[-] wewbull@feddit.uk 45 points 6 days ago

$60k per MW or $210M for a nuclear reactors worth (3.5GW). Sure... the reactor will go 24/7 (between maintenance and refuelling down times, and will use less land (1.75km² Vs ~40km²) but at 1% of the cost, why are we still talking about nuclear.

(I'm using the UKs Hinckley Point C power station as reference)

[-] Benaaasaaas@lemmy.world 32 points 6 days ago

Because there are nights there are winters there are cloudy and rainy days, and there are no batteries capable of balancing all of these issues. Also when you account for those batteries the cost is going to shift a bit. So we need to invest in nuclear and renewables and batteries. So we can start getting rid of coal and gas plants.

[-] suzune@ani.social 31 points 6 days ago

But Germany has no space for nuclear waste. They haven't been able to bury the last batch for over 30 years. And the one that they buried most recently began to leak radioactivity into ground water.

And.. why give Russia more military target opportunities?

[-] elucubra@sopuli.xyz 13 points 6 days ago

I'm not a rabid anti-nuclear, but there are somethings that are often left out of the pricing. One is the exorbitant price of storage of spent fuel although I seem to remember that there is some nuclear tech that can use nuclear waste as at least part of it's fuel (Molten salt? Pebble? maybe an expert can chime in). There is also the human greed factor. Fukushima happened because they built the walls to the highest recorded tsunami in the area, to save on concrete. A lot of civil engineering projects have a 150% overprovision over the worst case calculations. Fukushima? just for the worst case recorded, moronic corporate greed. The human factor tends to be the biggest danger here.

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[-] sugar_in_your_tea@sh.itjust.works 10 points 6 days ago

If France can find space, surely Germany can.

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[-] GissaMittJobb@lemmy.ml 23 points 6 days ago* (last edited 6 days ago)

Also when you account for those batteries the cost is going to shift a bit.

You better be bringing units if you're going to be claiming this.

Still less than half of the LCOE of nuclear when storage is added: https://www.statista.com/statistics/1475611/global-levelized-cost-of-energy-components-by-technology/

Given that both solar and storage costs are trending downwards while nuclear is not, this basically kills any argument for nuclear in the future. It's not viable on its face - renewables + storage is the definitive future.

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[-] wewbull@feddit.uk 14 points 6 days ago

You're using factors of less than 10 to argue against a factor of 100.

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[-] frezik@midwest.social 19 points 6 days ago* (last edited 6 days ago)

I think there's a contingent of people who think nuclear is really, really cool. And it is cool. Splitting atoms to make power is undeniably awesome. That doesn't make it sensible, though, and they don't separate those two thoughts in their mind. Their solution is to double down on talking points designed for use against Greenpeace in the 90s rather than absorbing new information that changes the landscape.

And then there's a second group that isn't even trying to argue in good faith. They "support" nuclear knowing it won't go anywhere because it keeps fossil fuels in place.

[-] sugar_in_your_tea@sh.itjust.works 11 points 6 days ago* (last edited 6 days ago)

What isn't sensible about nuclear? For context, I'm coming from the US in an area with lots of empty space (i.e. tons of place to store radioactive waste) and without much in the way of hydro (I'm in Utah, a mountainous, desert climate). We get plenty of sun as well as plenty of snow. Nuclear should provide power at night and throughout the winter, and since ~89% of homes are heated with natural gas, we only need higher electricity production in the summer when it's hot, which is precisely what solar is great for.

So here's my thought process:

  • nuclear for base load demand to cover nighttime power needs, as well as the small percentage of homes using electricity for heat
  • solar for summer spikes in energy usage for cooling
  • batteries for any excess solar/nuclear generation

If we had a nuclear plant in my area, we could replace our coal plants, as well as some of our natural gas plants. If we go with solar, I don't think we have great options for electricity storage throughout the winter.

This is obviously different in the EU, but surely the nordic countries have similar problems as we do here, so why isn't nuclear more prevalent there?

[-] itslilith 15 points 6 days ago

Because it makes no sense, environmentally or economically speaking. Nuclear is, as you said, base load. It can't adjust for spikes in demand. So if there's more energy in the grid than needed, it's gonna be solar and wind that gets turned off to balance the grid. Investments in nuclear thus slow down the adoption of renewables.

Solar is orders of magnitude cheaper to build, while nuclear is one of the most expensive ways to generate electricity, even discounting the waste storage, which gets delegated the the public.

Battery technology has been making massive gains in scalability and cost in recent years. What we need is battery arrays to cover nighttime demand and spikes in production or demand, combined with a more adaptive industry that performs energy intensive tasks when it's abundant. With countries that have large amounts of solar, it is already happening that during peak production, energy cost goes to zero (or even negative, as traded between utilities companies).

About the heating: gas can not stay the main way to heat homes, it's yet another fossil fuel. What we need is heat pumps, which can have an efficiency of >300% (1kWh electricity gets turned into 3kWh of heat, by taking ambient heat from outside). Combined with large, well-insulated warm-water reservoirs, you can heat up more water than you need to higher temperature during times of electricity oversupply, and have more than enough to last you the night, without even involving batteries. Warm water is an amazing energy storage medium. Batteries cover electricity demand as well as a backup in case you need uncharacteristically much water. This is a system that's slowly getting adopted in Europe, and it's great. Much cheaper, and 100% clean.

[-] xthexder@l.sw0.com 11 points 6 days ago* (last edited 6 days ago)

You bring up heated water as a method of storage, and it reminds me of a neighborhood in Alberta, Canada that uses geothermal + solar heated water storage for 52 homes. They've been able to successfully heat the entire neighborhood with only solar over the winter in 2015-2016 and have gotten > 90% solar heating in other years.

https://en.wikipedia.org/wiki/Drake_Landing_Solar_Community

There's a huge number of new storage technologies being developed, and the fact that some even work on a seasonal basis for long term storage is amazing.

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[-] alcoholicorn@lemmy.ml 10 points 6 days ago* (last edited 6 days ago)

A MW of solar averages out to about .2 MWh per hour. A MW of nuclear averages about .9 MWh per hour.

But even so as the UK does it, nuclear power isn't worth it. France and China are better examples since they both picked a few designs and mass produced them.

China's experience indicates you can mass produce nuclear relatively cheaply and quickly, having built 35 out of 57GW in the last decade, and another 88GW on the way, however it's not nearly as quick to expand as solar, wind, and fossil fuels.

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[-] pastermil@sh.itjust.works 7 points 6 days ago

but at 1% of the cost, why are we still talking about nuclear

Sure... the reactor will go 24/7 (between maintenance and refuelling down times, and will use less land

[-] wewbull@feddit.uk 7 points 6 days ago

The land thing isn't anywhere near enough of a concern for me, especially when dual uses of land are quite feasible.

24/7 is just about over commissioning and having storage. Build 10x as much and store what you generate. At those sorts of levels even an overcast day generates.

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[-] DogWater@lemmy.world 6 points 6 days ago* (last edited 6 days ago)

Because grid level power delivery is about FAR more than just raw wattage numbers. Momentum of spinning turbines is extremely important to the grid. The grid relies on generation equipment maintaing an AC frequency of 60 hz or 50hz or whatever a country decides on. Changing loads throughout the day literally add an amount of drag to the entire grid and it can drag the frequency down. The inverse can also happen. If you have fluctuating wind or cloud cover you can bring the whole grid down if you can't instantly spin up other methods to pick up the slack.

reliable consistent power delivery is absolutely critical when it comes to running the grid effectively and that is something that solar and wind are bad at

Ideally we will be able to use those technologies to fill grid level storage (batteries, pumped hydro) to supply 100% of our energy needs in the not too distant future but until then we desperately need large, consistent, clean power generation.

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[-] dgmib@lemmy.world 4 points 5 days ago

We can’t manufacture and install enough solar farms and storage to get us off of fossil fuel within 20 years and more importantly available investment capital isn’t the limiting factor.

Investments in nuclear power are not taking money away from investments in solar.

We can do both, and it gets us off fossil fuels sooner.

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[-] Vendul@lemmy.world 16 points 6 days ago

It’s kinda good but it completely destroyed the European manufacturing for solar

[-] humanspiral@lemmy.ca 39 points 5 days ago

When panels were 30c/watt, projects at $1/watt in EU and US happened. 70c/watt was spent on labour, copper, support structures, and grid connection equipment. All of those can be locally produced, with possible exception of last item.

At 6c/watt, that is over 90% of power projects are local economy boosting instead of 70%. It provides cheaper energy that is useful for industrialization and cost of living benefits too. US tariffs on solar are entirely about protecting oil/gas extortion power instead of a $10B solar production industry that needs fairly expensive support.

Solar imports does not cause energy dependence. You have power for 30+ years with no reliance on continuous fuel supplies. Shoes and apparel is a $450B industry in US. You need new supplies every year, and it makes much more sense to secure supply in that industry for war on the world purposes.

[-] surph_ninja@lemmy.world 13 points 5 days ago

You’re either an astroturfer or useful idiot spreading oil lobby talking points.

Either you believe the climate science or you don’t. If you do, you know that we don’t have time for industry protectionism.

[-] SkunkWorkz@lemmy.world 14 points 6 days ago* (last edited 6 days ago)

Yep the EU will be beholden to a dictatorial regime again. Instead of placating Putin for gas it will be Xi for solar panels and batteries.

[-] Knock_Knock_Lemmy_In@lemmy.world 12 points 6 days ago

At least those items you only need to buy once.

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[-] UnderpantsWeevil@lemmy.world 7 points 5 days ago

Europeans demolished their manufacturing sector when they stripped all the wiring out of the walls during the austerity years.

You can't blame people for buying foreign when you've been defunding domestic infrastructure for over a decade.

[-] IndustryStandard@lemmy.world 6 points 5 days ago

By providing big subsidies to green energy developement. Something the EU could also have done but refused to. And so they lost their entire lead.

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[-] Shardikprime@lemmy.world 23 points 6 days ago

Solar has always an extremely high ratio for megawatt per mass unit.

This price is really good

[-] Valmond@lemmy.world 23 points 6 days ago

Just have to buy 1100 panels 😋 but then the price is 0.055€/watt ...

I Want one, but only one or a couple, to put on my balcony...

[-] ikidd@lemmy.world 16 points 6 days ago

These are topcon modules only. Considering a 400W panel will have about 72 modules in it, that's only about 15 panels worth. Of course, then you have to actually build the panel and connect the modules, put it behind glass inside a frame, then put in a bypass diode and leads for connection. So an actual panel ends up being about 5-10X the cost of the modules per W.

[-] solrize@lemmy.world 6 points 6 days ago

You can pay a lot less than 10x for completed panels. https://store.santansolar.com/ amazed me.

[-] frezik@midwest.social 5 points 6 days ago

Thousands of people buying rooftop panels was never going to be the best way towards a Water/Wind/Solar (WWS) future. Fitting panels to the roof has to work around the roof geometry and obstructions like vents. That makes every job a custom job. It also means thousands of small inverters rather than a few big ones.

Compare that to setting up thousands of panels on racks in a field. As long as it's relatively open and flat, you just slap those babies down. You haul in a few big inverters which are often built right into shipping containers that can just be placed on site, hooked up, and left there. Batteries need inverters, too, so if your project includes some storage, then you only need one set of inverters.

I get the feeling of independence from the system that solar panels on the roof gives people, but it's just not economically the best way to go. The insanely cheap dollars per MWh of solar is only seen when deploying them on a mass scale. That means roofs of commercial/industrial buildings or bigger.

[-] A7thStone@lemmy.world 7 points 5 days ago

Rooftop units might not be the least expressive, but they are absolutely the way to go. The less we rely on the utilities, the more demand we take off of their adding grid, that they refuse to upgrade. It also means more energy independence. A friend of mine has a small rooftop setup that has completely offset his electricity isn't to the punt that he bought a plugin hybrid that never goes out battery for his day to day travels and costs him nothing to charge.

[-] frezik@midwest.social 5 points 5 days ago

If you want energy independence, push for community solar. Neighborhoods or municipalities get together to own their own solar field. Then you get a measure of independence while also taking advantage of economies of scale.

[-] Venicon@lemmy.world 26 points 6 days ago

Good news perhaps but I’m sure I won’t see any benefit in Scotland, still thousands to add solar panels.

[-] frezik@midwest.social 31 points 6 days ago

Scotland has really good wind power, anyway. Between that, nuclear, and a few other renewable sources, you guys are down to 10% fossil fuel energy use. So don't worry about solar.

[-] brsrklf@jlai.lu 11 points 6 days ago

You know, if you people wanna ditch the Kingdom and join the club, I don't think it's too late.

[-] Bosht@lemmy.world 8 points 6 days ago

Yup. Average here in south US is 25k for a home system without battery backup.

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[-] jagged_circle@feddit.nl 12 points 6 days ago

Theyre $1.25 per watt in south America right now (we have an energy crisis due to climate change caused drought)

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this post was submitted on 17 Nov 2024
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