Well, those are paradoxes of renewables. When the sun shines bright and the wind is blowing strong grid operators has to pay producers to stop producing, unless they can find someone who will take this energy for less money that they would have to pay to the renewables producers to stop windmills (this is that "price below zero").
When the sun is not shining and wind is not blowing and your country invested heavily into renewables (like United Kingdom) then you have basically two options. Build a lot of gas power plants, as only they have sufficiently quick cold start time (about 1h) or buy electricity paying (very high) spot prices.
Building gas power plants sounds good, but it costs money and you need a lot of them, plus, they emit CO2, defeating the whole purpose of this green transformation. So UK went with the second option, that's why they have the greenest energy on the World... and the most expensive one.
As a result, outside areas with predictable weather (that is deserts) it is much better to simply use technology that came into use 70 years ago (indeed in June this year it will be exactly 70 years) with great success: nuclear power plants.
And be done with all the paradoxes.
When the sun is not shining and wind is not blowing and your country invested heavily into renewables (like United Kingdom) then you have basically two options. Build a lot of gas power plants, as only they have sufficiently quick cold start time (about 1h) or buy electricity paying (very high) spot prices.
Building gas power plants sounds good, but it costs money and you need a lot of them, plus, they emit CO2, defeating the whole purpose of this green transformation. So UK went with the second option, that's why they have the greenest energy on the World... and the most expensive one.
As a result, outside areas with predictable weather (that is deserts) it is much better to simply use technology that came into use 70 years ago (indeed in June this year it will be exactly 70 years) with great success: nuclear power plants.
And be done with all the paradoxes.