HISPASAT, ABERTIS, a leading international group in the management of toll roads, and CELLNEX, the main independent infrastructure operator for wireless telecommunication in Europe, will join the “Earth Hour” campaign and turn off the lights at their Madrid headquarters, located at Paseo de la Castellana 39, next Saturday 25 March from 20:30 to 21:30, as a symbolic gesture of solidarity with the planet. ABERTIS and CELLNEX’s offices in Barcelona will also turn off their lights, both at the ABERTIS Corporate Headquarters located at Pedralbes 17, and at both companies’ buildings in the city’s Zona Franca, which have also signed on to this global initiative for environmental protection promoted by the World Wildlife Fund (WWF). The three companies have thus joined the group of over 35,000 companies all over the world who have participated in previous editions of the campaign, and reaffirm their commitment in the fight against climate change by incorporating sustainable solutions in their business models. About “Earth Hour” Earth Hour is a WWF campaign which began in Sidney, Australia in the year 2007 as a symbolic gesture in support of the fight against climate change. Ten years later, it has become the greatest environmental mobilization campaign in history. It is a massive expression of the way millions of people feel and their call for everyone’s committed involvement in response to climate change, the most important environmental threat the world is facing today.