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Swedish government removes nuclear power promise from website (www.telegraph.co.uk)

submitted 1 year ago by BuddyTheBeefalo@lemmy.ml to c/world@lemmy.world

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[-] DrAnthony@lemmy.world 47 points 1 year ago

You can bank on energy consumption rising year over year for the next lifetime or so. We have completely run out of low hanging fruit in terms of cutting back like moving from incandescent to LED lighting, installing heat pumps to replace resistive heaters...ect. Solar, wind and other green sources ARE very much the future (assuming we want to have a future at all), but their variable output doesn't mesh super well with how electrical grids are handled today. Batteries and other storage options are no where near ready and may never be for grid scale. This is where nuclear shines, that steady trickle over many, many decades as a bridge to a future with a redesigned distribution network and other technologies we can't even conceive of yet. The thing is it's a long term play, there's a massive upfront cost and the people involved the project today may not even be alive or seeking any sort of political office in 20 years when it's completely validated. Even if these plants can't get online fast enough to meet the peak demands in the near-term, there's nothing stopping them from scaling out solar and/or wind farms to pick up the slack.

[-] wewbull@feddit.uk 6 points 1 year ago

You're thinking too small with LED lights and heat pumps.

Overall energy consumption still has a long way to drop if we continue to electrify transport. Oil is consumed very inefficiently in internal combustion engines and electric motors are far more efficient. That's even before you account for the energy consumption of refining and transporting oil, all of which would vanish. Even if you just took oil out of the ground and pumped it into a furnace to generate electricity, then use that electricy to move everyone around, we'd drop our consumption significantly.

The setup with have now is desperately inefficient.

[-] DrAnthony@lemmy.world 2 points 1 year ago

I guess I could have stated the form of energy I was talking about a little more clearly. That's actually mostly in agreement to what I was referring to though, as we move from fossil fuel powered transport to EVs, we'll see that demand shift and drive electrical consumption up dramatically (even if the total joules of energy required decreases from a physics perspective). Yes, internal combustion is inherently very, very inefficient but it just takes HEAPS of energy to move 3,000+ pounds (1,350+ kg) of anything and all of that will be coming from the mains rather than an oil rig. That's why we (not just Sweden, all of us humans) need to increase our electrical generation capacity and modernize our distribution networks.

[-] gmtom@lemmy.world 12 points 1 year ago

The right choice. Nuclear would be a great solution if we went all in 40 years ago. But we didnt and now we need a solution as soon as possible, not in 15 years to build a plant or in 25 years when it breaks even, now.

It takes just 6 months to build a 50 MW wind farm https://www.edfenergy.com/energywise/all-you-need-to-know-about-wind-power#:~:text=Wind%20farms%20can%20be%20built,last%20between%2020%E2%80%9325%20years.

Sweden uses 130 TW/h per year (130000000000 KW/h) as of 2020 https://www.iea.org/countries/sweden

and about 25% of that is fossil fuels. as of 2017 https://www.macrotrends.net/countries/SWE/sweden/fossil-fuel-consumption

So they would need to replace 32500000000 KW/h per year to get off fossil fuels

But KW/h/y is dumb so lets just make it KW/h

3710045

Then make it MW (yes I know I converted from TW to KW to MW.) so

3710 MW needed to replace fossil fuels.

So they would need 74 50MW wind farms to match that.

If they wanted to do that in 10 years to be faster than building a single nuclear plant, they would only need to be building 4 farms concurrently.

[-] GissaMittJobb@lemmy.ml 19 points 1 year ago

and about 25% of that is fossil fuels.

Sweden uses essentially no fossil fuels in the grid - it's basically hydro, nuclear and wind for all of it. The small amount of fossil fuels used is stuff like burning plastics, and one oil plant that is turned on once in a blue moon when there's an energy crisis. It's national news when they turn that one on, and it's considered a huge failure every time it happens.

The real figure for fossil versus non-fossil energy in Sweden is 2% fossil versus 98% non-fossil, with hydro being the primary energy source (35-45%), followed by nuclear (30%) and then wind (20%). Source, in Swedish: https://www.energiforetagen.se/energifakta/elsystemet/produktion/

[-] OriginalUsername@lemmy.world 12 points 1 year ago* (last edited 1 year ago)

A few errors

130TWh is the final electricity consumption, not the generation. Since Sweden is a big net exporter of electricity, there is a big difference
I'm not sure what macrotrends refers to by "Fossil fuel consumption", but it's pobably referring to raw energy rather than electricity (which doesnt consider conversion efficiency)
In reality, sweden uses almost no fossil fuels in its electricity mix, and that is in large part due to nuclear
KWh and KW, not KW and KW/h
In your calculations you failed to account for capacity factors. Wind plants have average capacity factors of about 42% in sweden, so the capacity would need to be over double the consumption, even ignoring the variability of consumption and production

Nevertheless, I do agree that Sweden doesn't need more nuclear. It already generates some of the cleanest electricity in the world and I'd imagine fossil fuels are really only used for peak load.

[-] gmtom@lemmy.world 3 points 1 year ago

Thank you for the corrections!

[-] smollittlefrog@lemdro.id 5 points 1 year ago

But KW/h/y is dumb so lets just make it KW/h

It's kW, not KW/h.

[-] gmtom@lemmy.world 2 points 1 year ago

explain?

[-] smollittlefrog@lemdro.id 6 points 1 year ago* (last edited 1 year ago)

32500000000 KW/h per year

That's 32500000000 kWh/y
= 32500000000 * k * W * h / y
= 32500000000 * k * W * h / (365 * 24 * h)
= 32500000000 * k * W * h / 8760 / h
= 32500000000 / 8760 * k * W * h / h
= 3710046 * k * W * 1
= 3710046 kW

(You actually corrected yourself later when converting to mW.)

[-] SaakoPaahtaa@lemmy.world 2 points 1 year ago

Since watt is joule per second, kwh per year is one kilojoule per second per hour per year.

Electricians have played us like fools

[-] ammonium@lemmy.world 2 points 1 year ago* (last edited 1 year ago)

kWh is kilojoule per second times 3600 seconds or 3600 kilojoule. kWh/y is 3600 joule per year or 3600 kilojoule / (24*3600*365) ~0.1W

[-] SaakoPaahtaa@lemmy.world 2 points 1 year ago

Even more cursed

[-] gmtom@lemmy.world 2 points 1 year ago

...... exactly as I intended

[-] goostaf@lemmy.world 4 points 1 year ago

A kW/h would imply that the power changes by that amount every hour, while a kWh is the amount of energy spent in an hour

[-] gmtom@lemmy.world 2 points 1 year ago

Oh yeah, lol, I blame Friday morning fatigue.

[-] Carighan@lemmy.world 10 points 1 year ago* (last edited 1 year ago)

I mean let's be honest here, there's no way they did this because of an underlying police change.

I suspect they rather looked at other western countries trying to build large-scale projects and noticed how absurd the idea of building one nuclear reactor without a 15y++ delay was, nevermind 10 of them. Quietly drop it before someone checks whether it's even doable. 😅

Source: Am German, we are experts on letting our complicated building projects run completely overbudget and take multiple times as long as projected.

[-] bouh@lemmy.world 7 points 1 year ago

That's a so stupid take it's hilarious. It'd be a nice world if ecofanatics were spending half their energy against coal instead of fighting nuclear.

[-] wewbull@feddit.uk 1 points 1 year ago

Being against coal and gas, I want the fastest solution that displaces coal and gas. That's wind and solar in most locations. It's not nuclear. Nuclear takes a long time to build, and while you build it you're still burning coal and gas. Recent experience is that you take the original schedule / budget and multiply by 2 to 3, so that's even more time you're still burning coal.

Granted, if you already have nuclear, don't decommission it, but don't build more either.

[-] bouh@lemmy.world -1 points 1 year ago

So you are against nuclear.

[-] zephyreks@programming.dev 1 points 1 year ago

Sweden realized they couldn't join NATO if they invited Chinese expertise to help build a nuclear power plant.

[-] wewbull@feddit.uk 2 points 1 year ago

"Chinese expertise" building reactors like the ones in Finland, France and the UK?

I don't think it's a problem for those NATO members.
By the way those projects have gone, I'm not sure if expertise is the right word.

[-] CookieJarObserver@sh.itjust.works 6 points 1 year ago

Good. This entire thing was beyond stupidity.

[-] CrimeDad@lemmy.crimedad.work 2 points 1 year ago

BOOOOO

[+] bstix@feddit.dk -10 points 1 year ago

An electric grid based on renewables is a federated network.

Why anyone wants to put all the control and risk into one big nuclear company is beyond me.

[-] pedro@lemm.ee 8 points 1 year ago* (last edited 1 year ago)

What kind of risk are you talking about?

The electrical network connecting all your federated renewable infrastructures is managed by one entity already, isn't it? That's the same kind of risk you describe.

I get why people don't like nuclear power and there are many valid arguments against it but yours is not

[-] bstix@feddit.dk 3 points 1 year ago* (last edited 1 year ago)

The overall grid is managed by governments cross countries in Europe. The production is not. While the producers do have an obligation to provide enough electricity at all times, the consumer is free to purchase the electricity from any distributor they want. This creates a free market for pricing while keeping the production regulated. For a small country like Sweden, producing everything in nuclear would destroy the market mechanism on pricing, leaving then with a monopoly.

The risks towards energy production are stuff like war, natural disasters and terror. All of which have been relevant within the last ten years somewhere in the world and increasingly so. The only way to maintain a functional distribution of electricity in these situations is to have the production de-centralised.

[-] Sylvartas@lemmy.world 4 points 1 year ago

Most renewables can't produce energy at a large scale on demand. Nuclear is the king of that domain. I don't see the issue with plugging nuclear to that federated network in order to meet demand when the renewables can't

[-] bstix@feddit.dk 4 points 1 year ago

I agree. Sweden already has 6 nuclear plants providing 30% of the energy. Hydro power is 50% Together this is more than enough to meet baseload demand.

[-] Carighan@lemmy.world -3 points 1 year ago

I cannot comprehend how someone would think a dezentralized power network can be anything but a disaster waiting to happen. I would reckon even the crypto fanbois would figure out how bad an idea that would be.

And mind you, the type of power doesn't matter in that case. If your network isn't centralized (enough), you're fucked.

this post was submitted on 31 Aug 2023

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