This is more similar to California than Texas. Europe is not facing a shortage of energy but a shortage of generation and transmission capacity in times of peak demand. Luckily, as we know from California, there are plenty of responsible people in the society. When there is a risk of shortage and blackouts, many people will voluntarily lower their power consumption for a while.

Also, because this is about peak demand, increasing base load generation is of limited help. There is a shortage of power plants that are cheap enough to keep idle most of the time but can be adjusted quickly. That means hydro and natural gas. Even coal is too expensive. Storage may be the long-term solution, but we are not there yet.