The Barcellona P.G. facility, located in Barcellona Pozzo di Gotto (Sicily), came up against a problem, since the population had increased and there was no possibility of expanding the plant to adjacent lots. Between 2003 and 2004, the plant's capacity increased by 360%, thanks to the implementation of G-Tech technology, going from serving a population of 25,000 to some 115,000 inhabitants, without expanding the facility's total surface area.