In 2009, CAF was awarded the production and delivery of 21 URBOS trams for the city of Zaragoza. These are 100% low floor and consist of 5 modules each. The units are fitted with an on-board energy storage system (GREENTECH) which permits both catenary free LRV travel between stops, and energy saving via maximum braking energy recovery. The first unit was set into service in April, 2011.
This Zaragoza Tram Project was awarded "Best project in the world" in the "Light Rail Awards 2012".