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bryanlarsen • today at 3:42 PM • 3 replies • view on HN

That's not inconsistent. A robust grid will have enough capacity of any sort to cover peak demand during a dankelflaute but enough zero-emissions generation and storage to cover generation at all other times.

And that's exactly what Germany is doing. Their natural gas plants only run ~15% of the time. Usage is going down faster than capacity is going up.

https://unpopular-truth.com/2024/07/05/natures-influence-on-...


Replies

Tomte • today at 3:54 PM

Because everyone copies it: the word is Dunkelflaute. U, not a.

KyleTheDev • today at 3:47 PM

TIL Dankelflaute, a time when it is too dark with too little wind for either solar or wind energy generation. Thank you for this amazing word.

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e2le • today at 4:42 PM

I'm sceptical that more gas turbines doesn't create a more vulnerable grid. The possibility of gas shortages this winter is on the horizon and if the UK were to cease exports for whatever reason it would be a disaster for the rest of Europe.

Ed Conway released a video on the UK's gas network and disaster planning[0].

As shown in their documentary, a shutdown of exports to Europe would only require 2 or 3 failure events (low production from wind/solar, high-usage of gas for power/heating, disruption or cessation of imports via gas-tankers, well-placed damage to the gas network, extreme weather in the north sea). To maintain pressure in the gas network, they would begin shedding the largest loads first, exports to mainland Europe is #1 on that list.

Let's also not forget Nordstream and the disaster that caused when it mysteriously blew up. Before those pipelines exploded, there were protests in Germany because people were struggling to heat their homes.

Nuclear isn't vulnerable to any of these issues, we're very lucky that construction and investment has continued these past decades. /s

[0]: https://www.youtube.com/watch?v=sKDnZz4wypI

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