When you exceed the rule of thumb of 15% for renewables as part of grid capacity, you increase your risk for blackouts.
Spain was up to 56% and then went to 100% last week. Renewables are expensive and produce inconsistent power whereas nuclear and coal produce cheap and consistent electrical power. I expect to see many more blackouts in their future. Netzero could be re-defined as zero electrical power for you.
Spanish power BLACKOUT: Why Net Zero and RENEWABLES were to blame | MGUY Australia
https://www.youtube.com/watch?v=Ed8JLg92zGw
Spain’s big blackout came less than week after it went full green on electricity
https://freerepublic.com/focus/f-news/4313907/posts
Spain’s 100% renewable energy milestone followed by historic blackout – Coincidence?
https://freerepublic.com/focus/f-news/4313945/posts
The Iberian Peninsula… wiped off the map of lights. This is how it looked from orbit last night after a massive blackout hit Spain and Portugal. Cosmic silence over the region.”
https://x.com/buzzyrobot/status/1917172175418659130
It is difficult to regulate the AC frequency without heavy rotating machinery with lots of angular momentum. Sun and wind make frequency regulation an almost impossible task. The system is “hard” when you have power generated by 90% spinning mass and solar and wind cannot upset it. But when you get above 20% or 25% renewables without spinning mass regulation becomes hard and above that the system can become unstable.