Large parts of Spain and Portugal - including Madrid and Lisbon - have been hit by a power outage. Spanish power grid operator Red Electrica says it is working with energy companies to restore power. Parts of France also appear to be affected, according to Spanish media reports, which said Seville, Barcelona and Valencia were hit by the outage. Telephone lines were down across the country, reports said. Parts of Madrid underground have been evacuated and traffic lights in the city are not working, according to local media. Play has been suspended at the Madrid Open tennis tournament. Meanwhile, thousands of passengers have had to be evacuated after the outage left the metro service in Barcelona without power, according to Spanish news site El Mundo. The blackout is also reported to have forced the closure of the city's tram system and rendered some traffic lights there inoperable. It comes as Metrovalencia, the urban rail system, encompassing both metro and tram services in Valencia, said traffic in the city is "disrupted" due to a "general power outage in the city". In a post on X, Metrovalencia added: "The extent and duration of the outage are unknown." This breaking news story is being updated and more details will be published shortly. Please refresh the page for the fullest version. You can receive breaking news alerts on a smartphone or tablet via the Sky News app. You can also follow us on WhatsApp and subscribe to our YouTube channel to keep up with the latest news.