France systematicaly refuses to increase the power of their interconect with Spain, as well as to make a gas pipe that would provide cheap Algerian gas to the rest of europe.

An interconnection is being built up as we speak.

That being said, building new interconnections makes no economic sense for France. The country has no unserved consumers close to the border. That means any electricity imported from Spain would have to be carried further. That involves grid spending paid for by french consumers, without any benefit for them.

The same goes for gas pipelines. No one enjoys big infrastructure projects for stuff they don't really need.