Spain's grid operator says all substations working, meeting virtually all demand after Monday's blackout

MADRID, April 29 (Reuters) - Spanish electricity grid operator Red Electrica REDE.MC said it was able to supply 99.16% of the country's electricity demand early on Tuesday as the system gradually recovers from a nationwide blackout on Monday.

All the country's substations were operating on Tuesday morning, Red Electrica said in a post on X social media. "We keep working on restoring (power)," it added.

A huge power outage hit most of the Iberian Peninsula on Monday morning, bringing both Spain and Portugal to a standstill - grounding planes, halting public transportation and forcing hospitals to restrict routine proceedings.