Madrid Metro was placed in lockdown as a power failure caused chaos in Spain, disrupting travel across the region.

Footage shows a station engulfed in darkness, with passengers leaving the area on April 28.

Officials said the electricity cut was part of a major grid failure that impacted large parts of Spain and Portugal. The disruption came during key matches, including Jacob Fearnley's third-round clash against Grigor Dimitrov.

The country declared a state of emergency. More than 30,000 police officers were deployed to deal with the mayhem caused by the power failure.

Spain's reliance on solar and wind was said to have exacerbated the power cuts because the renewables can make the grid less stable.