Parts of France temporarily lost power following the outages in Spain and Portugal, Reuters news agency reports, citing French grid operator RTE. A spokeswoman for RTE gives no further detail on the extent of the outage, but says that power has now resumed after the brief interruption.

Power began returning to households in Spain and neighbouring Portugal, hours after cities across the Iberian Peninsula were plunged into darkness in one of Europe's most severe blackouts.Investigators are still looking into the cause of the blackout which remains unclear,