Comment Re:It sounds like (Score 2) 26
Contrary to what the article seems to point, the problem was not the infrastructure, that was already one reason why the problem was so bad.
The infrastructure for Spain and Portugal is wide and well connected. they have many lines and renewable sources. A failure in one should not have affected the others. Nuclear and Gas are more centralized, so more risky for this to happen... if it was not one small detail:
Nuclear and Gas have inertia, so a small problem may be erased by the inertia, but on most current renewable we don't have it... we actually can have it too, but right now most connection to the grid are set to follow the grid and if something goes out of sync, they should shutdown. So instead of erasing the problem, the current setup makes things worse, as they add even more fluctuation.
Sure, wind have inertia... but that is useless if that is isolated from the grid by a electronic switch that disconnect the turbine if their output doesn't match the grid one.
Hydro have inertia and most do have that inertia build in, simply because they are older. All new setups saved money by ignoring that small detail, after all, the grid is always fine, right!!
The solution is simple: add more inertia... the quick fix right now is to keep gas working.
the future new solution is to add flywheels, gravity batteries, even normal batteries, like Musk did in Australia... that simply helps to erase any fluctuation and may help also storing energy for more demanding hours... so win-win
the long term solution is that more renewable don't shutdown, but instead use other way to make sure they are fine and keep working as they were.
Another solution for this localized problem in Spain (and Portugal) is the interconnects with the rest of Europe. France have been blocking the connection of cheap renewable from Iberia to the rest of Europe, to protect their lucrative nuclear plats selling energy. The problem is that Spain and Portugal are really an island in the matter of electricity. They can't export energy and can't also get help from France to add more inertia to the grid. Maybe this will finally unblock this problem and force Europe to have a more interconnected grid. There are already plans to link Spain to Italy, to bypass France, increase the connection to Morocco. Portugal is trying a connection with Morocco and North of France too
So yes, this was first a management problems, trying to make as much money as possible and everyone left to the next guy to add inertia to the network.
The tech exist, but was postponed until renewable usage higher... and it is higher already than Coal, Gas and Nuclear