The Spain/Portugal blackout happened when network management failed to predict a workable source mix. Basically human error.

Political pressure is hardly a renewables problem, and is more likely to mitigate it than make it worse.

Currently we get a lot of energy by shipping it as physical cargo around the world through various unstable regions after it's produced by hostile regimes - which is not exactly a recipe for reliability.

https://www.reuters.com/business/energy/investigation-into-s...