New coal plant Datteln 4 test runs disrupt German power prices
By the way, by 2022 Germany plans to kill 70 TWh zero-emissions supply from nuclear power. Guess what will replace it?
@kravietz hm, let's take a look at the data
https://de.wikipedia.org/wiki/Energiemix#/media/Datei:Energiemix_Deutschland.svg
red is nuclear. below are fossils, above are renewables.
Just to give you an idea: 400 MW wind plant occupies ~70 km2.
To replace the current 7 GW from nuclear you'd need 17 such wind farms... except wind works at 30% on average due to intermittency, so you need 3x that which would require 3675 km2 so roughly area of 61x61 km2 of nothing but wind farms.
And then you would need some kind of storage (not yet existent).
the storage actually exists. what they do in Italy (not sure in other countries, i never worked in facilities there) is to use surplus of energy to pump water up to the higher dam. So they will produce energy with the same water when coming back from the dam.
https://it.qwe.wiki/wiki/Pumped-storage_hydroelectricity
unfortunately I cannot find an english link in the page, but I think google translator works pretty well on same page...
Pumped storage is well known and used in all countries that have some kind of mountains, including Germany where it can cover for around... 5% of the capacity. Perspectives for increase are dim as not many residents are willing to move to allow whole valleys to be flooded for new reservoirs :)
but a nuclear plant has exactly the same issues, with excess of energy instead of lack: it cannot scale on demand. So in a low demand moment, you have to pump water up some reservoir.
When Italy was planning nuclear power, there was put a reservoir there, like in Brasimone (i used to live 15 km from there). This is because you cannot easily descale nuclear power production, and you need to distribute the power grid. Overproduction and underproduction , under the grid's perspective, are both issues you need to solve with reservoirs (or other massive way to waste energy, in case of overproduction).
last but not least, is not clear to me why you keep in consideration population's will when it comes to dams and windmill, but you ignore people protesting against nuclear power plants.
What makes you think people would accept nuclear plants better than dams?
> nuclear plants better than dams
A dam occupies tens of square kilometers of land. A nuclear power plant occupies 0.1 km2.
> it cannot scale on demand
You're talking about 70's power plants. Modern nuclear power plants can scale their output in 20 minutes. Modern gas plants for comparison - 10 minutes.
> people protesting against nuclear power plants
People protest against nuclear power plants out of ignorance while protests against dams and wind farms are rational.
> A dam occupies tens of square kilometers of land. A nuclear power plant occupies 0.1 km2.
so basically you think people is against nuclear power because of soil consumption?
> You're talking about 70's power plants. Modern nuclear power plants can scale their output in 20 minutes. Modern gas plants for comparison - 10 minutes.
On powerpoint everything works. The problem is, to scale in 20 minutes you need a smart grid. In Italy is there since 2000. IN Germany there is nothing like that, as I noticed when I moved here. You are still using electromechanical counters, not connected to any communication network. Meaning, you send humans to read consumption, while in Italy consumption is sent over the network. I used to work in the software used to receive data.
But the point is, no power plant can scale in 20 minutes, just because it needs to know it must scale, and with no smart grid you cannot. You cannot take the measure on the plant itself, because the grid will take a lot to charge and discharge.
So yes, on powerpoint modern nuclear plants can scale in 20 minutes, IF there is a smart grid, IF the grid itself support discharging and charging back with the same slew rate.
I smell propaganda , being honest.
> People protest against nuclear power plants out of ignorance while protests against dams and wind farms are rational.
Yes, everone is equal, but someone is more equal. And of course, you decide who.
Sorry, I still smell propaganda here.
> On powerpoint everything works.
This is is what you said in the first place:
> nuclear plant (...) cannot scale on demand
Your statement was false. Nuclear power plant *can* scale output.
What you are talking about *now* is the grid scaling, which applies equally to wind, solar, nuclear, gas or coal power plants.
oh, now you play on useless details.
no, they cannot scale in 20 minutes, once they are connected to a grid. which is the reason we build power plant. Unfortunately, in the whole planet, no known grid can allow that.
Sure, you say that an ISOLATED nuclear plant can scale in 20 minutes. fine. If it's isolated, it cannot even start, to be honest. Yes, it needs bootstrap from the network too. So ok, IF there was a power plant able to start DISCONNECTED from the grid, and then you were able to start one, then you could descale in 20 minutes. Unfortunately, no real grid can do that without entering protection state.
So yes, on powerpoint everything works. Reality is different. And this was my point.
So basically NO, it cannot scale in 20 minutes. It could having a whole grid allowing that, by example in Italy (the example I know) a single powerpolant could descale ~10GW in one hour. Which is VERY quick for the standards, because the project started after a huge blackout, so they set very high standards.
In Germany you have no way to do that, since there is no investment in the grid since 20 years. You don't descale at all, you are betting industry will absorb all, together with railways. This is why basically is very hard for you to stop railways , even with coronavirus.
So don't propose nuclear plants when your grid cannot support it. You need to cover 20 years of lack of investments before. Then you can start to have modern power plants.
Just for the record, this is why windmills and solar power aren't used for industry in germany. What german companies are doing to appear "100% okostrom" is to buy financial "green" assets from Norway and Sweden, to "green wash" non-green powerplants, also named as "emission trading".
https://en.wikipedia.org/wiki/Emissions_trading
If you put a modern plant in the german"s obsolete grid, you will end in some overproduction issue, and then more dams would be needed. No smart grid, no modern powerplants. "Modern" means this too.
So basically, Germany can only keep gas and carbon for industry, plus windmills and sun for residential, unless germany renews the power grid , covering 20 years of gap.
For the record, I also worked in the same issue with a Dutch company which was doing the same as Italy, in the nederlands, but using GSM and SMS in counters: they only sent the lecture, every month, while in Italy each counter sends the consumption 24/7, so they have "half smart" grid.
To say germany is more or less alone in Europe with this 1980's-like power grid.
Forget putting "modern" powerplant in this grid. Is not digital enough for that. It only carries power, and a little data. Germany can only make power with current technologies, unless powerpoint proofs otherwise. (sarcasm here).
So I'm sorry, I know there is "modern" nuclear power, but it requires a "modern" power grid, which is not existing in Germany.
So you are discussing of unpractical things.
> Germany can only keep gas and carbon for industry
But you are certainly aware of the fact that they are building new coal and gas power plants right now as we speak, and their whole Energiewende is - today, in practical terms - by replacing 70 TWh of *existing* nuclear plants by gas?
> appear "100% okostrom"
This is precisely my point! They are claiming their Energiewende is "green"... and increasing their fossil gas imports at the same time!
sure they build new gas and coal plants. Design is very old, it comes from 1980, so they are very new but not very "modern", just because there is no digital grid.
Just for the record, after using a smart grid Italy stopped to import energy from france and switzerland because of optimization savings. They only need something in summer, because of air conditioning power nightmare.
But again, is not changing the power production you do the most of savings today. The big saving you can do is using a smart grid.
To give you a reference, domestic power in italy is limited to 3KWh per contract. Some (like me) used to have 4.5Kwh because of warming with heat pumps. Companies are allower 6Kwh, and 10Kwh or more is only for industry. And people is living pretty confortable.
In Germany you have 16KWh per contract. Wastes of power are everywhere. 10/12Kwh consumption for taking a shower. Seriously?
And you think this is an issue you can solve using another kind of power generation?
The issue is not in power generation, is in 1980's-like distribution grid and even worst model of consumption. germany can do NEW plants, but not MODERN plants, because they need a modern grid.
There is only one industrial country which has a worst power grid than Germany in the world, which is USA, but this is a completely different kind of energy-third-world. Yes, they are even worst, and they pay the price with lot of blackouts.
german grid is very stable because it is oversized for robustness, but you pay the price in summer, when electric trains are stopped in the middle of nowhere, to cover cities which are sucking all the power for air conditioning. With a smart grid this would not happen, by instance.
> this is an issue you can solve using another kind of power generation
I don't. This is what Greenpeace and German government is saying.
I'm saying they are stupid and anti-scientific by shutting down their nuclear reactors and replacing them with gas and coal when we need to decarbonize. And also for bullying other countries to get rid of zero-emission nuclear energy and buy the Nord Stream gas from Germany.
You just gave me yet another good argument about the grid.
sorry, those nuclear reactors were obsolete, Perhaps one of it was running with Thorium. Which seems a nice idea, but it has too little testing time to be very safe. Design was 1980.
Sure, you could upgrade , but then again the modern ones are in the need of data, then you need a smart grid, and Germany did not invested. So yes, shutting them down was due diligence.
not really true.
the dismantling of THTR-300 , is expected to start in 2027. It's part of the plan, even if the powerplant stopped to produce in the early '90s.
Here the full story.
https://en.wikipedia.org/wiki/THTR-300
The "dismantling plan" also covers this disaster.
And here we have another issue with nuclear, which is the long-term planning needed.
