This is a complete mischaracterization of why Germany invested so much into renewables. Like... 20 years ago? Germany saw the writing on the wall when it comes to how they were getting their energy which at the time was mostly coming from coal. They didn't want to go Nuclear for whatever reason so that left renewables and natural gas which wasn't preferred but it was still significantly better.
They didn't do it just to "be super green". They did it because coal is all around bad and wasn't the future that Germany wanted--and they were right. They absolutely made the right decision back then and investments by the German government are a big reason why solar is the cheapest form of energy right now (thanks Germany!).
If anything they didn't invest enough in renewables. They obviously didn't expect the effects of global warming to come this quickly. A big reason why electricity is so expensive is because the rivers in France that supply water to their nuclear reactors dried up. I mean, how do you predict something like that happening even 10 years ago? Even if that was a possibility included in some climate change report how seriously would politicians take such a prediction?
They basically left the door open to abusive trade partners by not building any redundancy on such a critical resource. And it is not just electricity Germany needs gas for as it is also a very important resource for lots of industrial processes (and used for heating a lot but that should be replaced by heat air pumps)
Obviously such redundancy would have pushed up the price of gas in the short term at least. Easy to say this stuff in hindsight.
If there is a problem, it's either on the share of the generation that they decided to let for those "stabilizing" sources (it is much larger than the short term instabilities on their grid) or on the lack of diversity of their supply.
But there is more:
- They wanted to be super green so lets go with sun and wind
- But, hey sun and wind are not reliable (not talking about some problems that the grid is not very good prepared to handle the peaks), especially not in winter
- Let's use gas to cover that, Russia is so friendly country, and its all about business, what kind of maniac would stop natural gas, when we pay billions for it
- Hmm, well there is 'a country' that is using natural gas to do politics, but hey, they got Crimea now, what would they want more, when we are still paying that billions to them. Let's build another gas pipe, and pretend nothing can go wrong, while ignoring that negativistic east-european countries preparing for worst case scenario
- And, what about shutting down that completely functional nuclear power plants ? We want to be green, lets do that.
- Oops, our lovely natural gas supplier attacked another country
- Oops, our natural gas power plants are somehow costly to run now, lets burn some coal
- Oops, coal is also getting a bit expensive
- Oops, our not very friendly natural gas supplier, occasionally stops natural gas now
- Ooops, our natural gas reservoirs will be not full before winter
- Oooops, winter is coming...