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submitted 1 year ago* (last edited 1 year ago) by lntl@lemmy.ml to c/worldnews@lemmy.ml

Growth in german wind capacity is slowing. Soo... then the plan is to keep on with lignite and gas? Am I missing something?

Installed Wind Capacty - Germany

German Wind Capacity

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[-] Ooops@kbin.social 42 points 1 year ago* (last edited 1 year ago)

Yes, what you are missing is reality.

You can either build renewables to replace fossil fuels in the next years (and if the build-up doesn't work as fast as you want to then it will takes a a few years more to reach zero), getting less and less every day. Or you can build new nuclear reactors and just keep burning coal full steam for 5 years, 10, 15, probably 20. And then you reactors are finally online, but electricity demand has increased by +100% (and further increasing...) so you burn more coal for another 5, 10, 15, or 20 years...

The exact same thing happens btw right now in basically every single European country that promotes nuclear. Because nobody is building enough capacities to actually cover the minimal required base load in 2-3 decades (electricity demand until 2050 will raise by a factor of 2,5 at least - because most countries today only cover 20-25% of their primary energy demand with electricity but will need to raise that to close to 100% to decarbonize other sectors; so we are talking about about a factor of 4-5, minus savings because electricity can be more efficient). They just build some and pretend to do something construtive, while in reality this is for show and they have basically given up on finding a solution that isn't let's hope the bigger countries in Europe save us.

For reference: France -so the country with optimal conditions given their laws and regulations favoring nuclear power and having a domestic production of nuclear reactors- announced 6 new reactors with an option for up to 8 additional ones and that they would also build up some renewables as a short-term solution to bridge the time until those reactors are ready. That's a lie. They need the full set of 14 just for covering their base load for their projected electricity demand in 2050 and that's just ~35% of ther production with the remaining 65% being massive amounts of renewables (see RTE -France' grid provider- study in 2021). Is this doable? Sure. It will be hard work and cost a lot of money but might be viable... But already today the country with good pre-conditions and in-house production of nuclear reactors and with a population highly supportive of nuclear can't tell it's own people the truth about the actually needed investments into nuclear (and renewables!), because it's just that expensive. (Another fun fact: The only reason why their models of nuclear power vs. full renewables are economically viable is because they also planned to integrate huge amounts of hydrogen production for industry, time-independent export (all other countries will have lower production and higher demand at the same time by then) and as storage. So the exact same thing the usual nuclear cult here categorically declares as unviable when it's about renewables.)

[-] lntl@lemmy.ml 32 points 1 year ago

is it true that in reality we can only build renewables OR nuclear? i feel like that's not reality.

I'm reality, the world is burning and both techs will mitigate. instead of resisting nuclear, renewable advocates ought to go after fossil fuel subsidies

[-] Ooops@kbin.social 7 points 1 year ago* (last edited 1 year ago)

I would love to say we can build renewables and nuclear. But let's look at the actual reality: Not only are most countries with a nuclear plan lacking proper amounts of renewables (because for more than a decade an anti-renewable streak was part of nuclear lobbyism - see the amount of people here or anywhere else hallucinating about "expensive renewables" when their own model of electrity generation needs those renewables (and even some storage) to be viable), it's even worse. Most of these countries aren't even able to build nuclear on the proper scale they would need.

So no, there is no technical reason we can't build both.

But real-world experience right now shows us that most can't even get the proper build-up of nuclear alone done. Explaining to their heavily desinformed voters why they need to build massive capacities and also need to build even bigger amounts of renewables seems to be indeed impossible right now.

The other thing is time frame. If the already agreed upon climate goals give you a remaining co2 budget for another 6 or so years, you can indeed not start building nuclear now. That would have been a wonderful idea a decade or even longer ago.

There is actually only one undisputable thing we need to do right now: build up renewables and massively so. To stretch out the remaining budget (via constantly reducing CO2 emission quickly) to 1-2 decades and use that time to a) either build up storage and infrastructure or nuclear base load. The difference is that the infrastructure and storage can be build in steps alongside renewables while the nuclear base load would need to start today. And most countries seem unable to do it, with the deciding factor being costs. Costs they would also mostly need to pay now in advance.

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this post was submitted on 02 Sep 2023
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