As I write it right now Denmark is producing 0 solar, and only 12.5% of its wind production. Because its cloudy and there's little wind.
So they have to import almost 40% of electricity from Norway and Sweden where electricity generation is propped up by nuclear
To be clear, Norway has no nuclear. 99% of generation there is hydro. Low wind in Denmark likely means they release more water for a bit; system works as intended.
See my addendum comment about Germany for example. They had to burn coal to keep up with the demand while their 200% overprovisioned renewables could only generate 20% of required electricity.
Today the only countries were renewables worked at close to 50% installed capacity were UK (wind) and Greece (solar). Everywhere else at best wind and solar were at 30% production. The entire Europe was busy burning gas, coal, or hoping that neighbours have enough nuclear and hydro installed.
> Norway has no nuclear. 99% of generation there is hydro.
Yes, this was my mistake. I should've said: propped up by stable energy sources: nuclear (Sweden) and hydro (Norway and Sweden)
Which is up from pretty close to 0% just a few decades ago (example: https://en.wikipedia.org/wiki/Wind_power_in_Germany#/media/F...). We're just getting started; this is a multi-generational megaproject.
You seem to think people are declaring the shift to renewables to be finished. I'm not sure where you obtained that misunderstanding.
Germany already overprovisioned. 200% of electricity requirements. And yet...
When I point out that even overprovisioning doesn't seem to work, people deflect, deny, stop responding, or reply in non-sequiturs.
So. Given that yesterday renewables in only two countries (Greece) managed to reach 50% of their installed capacity (not all renewables, but different types of renewables), how many renewables need to built to make sure that all of EU needs are met?
You keep saying this, and then you keep saying they don't have enough. These both cannot be true, and Germany's continuing to expand their wind/solar efforts indicate they don't believe they've "overprovisioned" yet.
Germany's plan goes out to the 2050s. Your complaint that they haven't provisioned enough yet is not in good faith.
When I wrote this it was even worse in Germany. 30% of total electricity coming from coal. Because:
- The total installed capacity of wind covers Germany's needs. Only 28% of installed capacity is produced
- The total installed capacity of solar exceeds Germany's needs. Only 2.7% of installed capacity is produced
That is, currently Germany needs 65 GW of electricity. Solar + wind have a total installed capacity of 134 GW, double what Germany needs. And together they still barely produce 30% of what Germany requires.
So Germany supplements that by burning coal, biomass and gas, and importing electricity.
The lesson learned is not “green power bad”, it’s “don’t rely on gas from dictators”.
Ah yes. This war is the reason why 134 GW of renewable energy only produce ~20GW, and why Germany burns 20 GW of coal (by pure coincidence that's about as much as the capacity of all decommissioned reactors since 2011)
https://www.reuters.com/markets/commodities/energy-crisis-fu...
The long term plan was always EU-wide energy projects to account for “its cloudy in Germany” scenarios. That plan isn’t complete.
Again:
- is it war that makes renewables produce 15% of their installed capacity?
- is it war that made Germany shut down 20GW of nuclear power plants?
> That plan isn’t complete.
And it never will be complete. Because when it's cloudy in Germany, those clouds don't stop at Germany's borders. Literally see the comment above about Denmark.
No form of power meets its theoretical "installed capacity". No one runs their nuclear, gas, coal, or oil plants at 100% 24/7/365 either. Yes, some days it's less windy; some days it's more cloudy. The dramatic fall in cost for new solar and wind capacity makes the solution pretty obvious; you build more to account.
> is it war that made Germany shut down 20GW of nuclear power plants?
It's war that makes Germany temporarily wish they hadn't.
> Because when it's cloudy in Germany, those clouds don't stop at Germany's borders.
They're unlikely to cover the entire EU's interconnected grid (and there's talk of generation in Morocco; https://www.washingtonpost.com/climate-solutions/2023/04/13/...). When the entire EU is covered in clouds, it's especially unlikely that there's no wind at the same time.
Given Germany's plan is 60% renewable generation by 2050, not 100%, they clearly understand the need for some flexible options for the tail ends of things.
And yet unlike renewables nuclear (and coal and gas etc.) are very close to that. And nuclear routinely runs close to its capacity, predictably.
> When the entire EU is covered in clouds, it's especially unlikely that there's no wind at the same time.
So each EU country has to overprovision enough solar and wind to potentially generate power for the rest of the EU countries? Case in point: https://news.ycombinator.com/item?id=38276778
Sure. Apples to oranges; they're not the same thing. Theoretical perfect-day max generation isn't how you provision solar/wind, that'd be stupid; the folks building out Germany's renewable efforts aren't stupid.
If you need a certain baseline of a certain renewable, you overprovision (and trade capacity with other areas and generation methods). Given the cost of new solar/wind capacity these days, that still makes perfect economic sense. Any long-term renewables plan is going to include energy storage and peaker plants of some kind to ensure a reliable grid on a national/continental scale.
How much? Is 200% of required generation enough? Is 500%?
Germany - and the rest of their interconnected EU grid - will continue to build out cheap, clean power for the forseeable future.
Indeed. And what's your point?
> By building more renewable sources, we will need less and less fossil capacity.
How many more renewables?
The installed capacity of renewables in Germany is double its needs for power.
The installed capacity of renewables in Denmark is 1.5 times its needs for power.
Do we need 10 times more? 100 times more?
As mentioned elsewhere in this thread, the peak production makes German electricity cheap enough to make everyone around them use it when it's available. If all the neighbors used this approach too, over the course of a day it would be everybody's turn to provide energy for the neighbors as renewables production will never be zero globally.
I'm not.
What I'm pointing out is that renewables in Germany are significantly overprovisioned. And still produce just 15% of their installed capacity because it's a quiet cloudy day.
> the peak production makes German electricity cheap enough to make everyone around them use it when it's available.
Ah yes. When they are available. That's the point, isn't it?
> If all the neighbors used this approach
Denmark is at 150% of its needs, was importing 40% of its energy from neighbors, and, ironically, from Germany which was burning coal.
So. How much each of the neighbors, and each of those neighbors' neighbors etc. need to overprovision renewables?
And we get it, Germany burn coal for electricity. And we all know that is bad. Point taken and not objected.