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by Nodraak 1395 days ago
> nuclear is demonstrably not working well

You are jumping to this conclusion way to fast.

First, you are cherry picking: you should look at the yearly load factor, not a random day and time of the year when it supports your argument. And you will find that nuclear has the highest load factor of all, 80-90%, while solar/PV will never be above 30-40% (because of physics, you can not change that).

Second, and since I just demonstrated that on a yearly timeframe nuclear works very well, the right question to ask is: why are there so many nuclear plants offline right now? The answer is quite simple, and is due to one of the advantage of nuclear: you can choose when to switch it on or off, for ex to perform maintenance. So, when is the best time to perform maintenance? Answer: just before the peak load, which happens in winter (Mondays around 8 AM in January, to be more precise), so you switch nuclear off in autumn, ie now. It's actually a good news that the load factor of nuclear is so low right now, it means that nuclear will be ready and will work well in a couple of months when we will need it the most.

> Currently Germany is exporting lots and lots of energy

Again, cherry picking, show me the yearly stat. But actually the only comment I will make here is about the criteria you are using: is exporting a lot of energy a good thing? I would say it depends. High variability is bad, it makes the grid unstable. I would rather have low and steady import/export rather than big swings. Exercise for the reader: what allows you to have steady production of electricity (nuclear, hydro, solar, wind, ...)?

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We need more nuclear. Simply because that's the only low carbon, controllable option that currently exists (hydro needs mountains, fossils are high carbon, solar/wind are intermittent)

1 comments

Shockley-Queisser limit is not absolute.
Yes, it has many end runs that lead to the high 60's in multiple junction systems. Add $$ = works in orbit. A good outline is this https://en.wikipedia.org/wiki/Shockley%E2%80%93Queisser_limi...