Negative energy prices shouldn't really be a crisis, but what you're saying is, the way the whole grid works is changing due to the way that renewable energy is variable whereas traditional energy generation is constant. So this is just about "Change", and Change is awkard in the short term but can be handled in the medium term. Maybe we need new types of fossil power station that can be turned on and off faster. Maybe we need more intra-grid trading. Maybe we need more storage, or maybe we need more 'useful' things that use a lot of electricity that can be turned on to use the excess (seawater desalination, etc). The contracts with the wind producers will also need to change over time, obviously.

The problem here is not negative electricity prices - those are the opposite of a problem. The problem is the grid needs to re-adapt.