Important proverb but I'm skeptically if it fits here. The example is France, which struggles to generate enough energy because their nuclear fission reactors need:

    * Water
    * Maintenance
    * Security issues

For these reasons in July 2022 only 26 from 56 were operating. Therefore Germany exports electrical energy to France with only 3 remaining nuclear fission reactors. And also to Swiss because usually Italy imports energy from France. Luckily electrical grids in Europe are connected which each other.

Electrical Energy in Germany 2022-08-30

   Coal            38,0%
   Wind            14,9%
   Gas             14,2%
   Solar           11,4%
   Biomass          7,9%
   Nuclear Fission  6,9%
   Others           6,8% (should be water and other resources)

More than 50% are coal and gas. Bad. More than 40% are renewable. Good!

Gas is intended only to fill short gaps. The plan is to increase wind-energy and solar-energy by a lot. While not controllable they are reliable. Nobody can cut off wind or gas. Another challenge is storing enough energy in hydrogen. Which is considered to be a good thing since some shift in recent years. We will need even more electrical energy for battery cars and for creating SAF/EFUEL for planes and the industry. The tricky part is doing the right thing, for the right reason, at the right time. Looking back that would've been done easy thirty years back ignoring short minded economic needs driven by capitalism. I still hope for progress regarding nuclear fusion because it could be so much better than fission.

https://en.wikipedia.org/wiki/Nuclear_power_in_France#Crisis...

https://www.srf.ch/news/international/energiepolitik-frankre...

https://www.faz.net/aktuell/wirtschaft/energiepreise-aktuell... # updated daily