[terom]

It looks like the Iberian peninsula is relatively isolated from the rest of the CESA synchronous grid, with only 2% cross-border capacity compared to local generation. [1]

There's a map at [2]

> The Spanish electricity system is currently connected to the systems of France, Portugal, Andorra and Morocco. The exchange capacity of this interconnection is around 3 GW, which represents a low level of interconnection for the peninsula. The international interconnection level is calculated by comparing the electricity exchange capacity with other countries with the generation capacity or installed power.

[1] https://www.ree.es/en/ecological-transition/electricity-inte...

[2] https://www.entsoe.eu/data/map/

[brohee]

Edit : I was misreading the confusing Rte site... Entsoe actually a lot more readable. France went from importing to exporting around the incident.

https://www.rte-france.com/eco2mix/les-echanges-commerciaux-...

https://transparency.entsoe.eu/transmission-domain/physicalF...

[terom]

That graph doesn't seem to make a very clear distinction between historical, real-time and predicted values... I think the event happened at 12:30 local time or so.

There seems to be some kind of recurrent daily pattern where the French - Spanish interconnect switches from Spain -> France imports to France -> Spain exports at around that time, and then back again in the late afternoon.