The sweeping power outage that hit Spain and Portugal this week has raised questions about the electricity grid in a region not normally known for blackouts.

Play was first suspended soon after 12.30 p.m local time, at an inopportune moment for Britain’s Jacob Fearnley. He had just saved a match point and broken Grigor Dimitrov to keep their match alive, but the players were taken off court with the Brit about to serve down 5-4 in the second set.