The 26-year-old is the third signing for the Spanish WorldTour team which has added Rubén Fernández (Caja Rural-RGA) and Marc Soler (Lizarte) to its 2015 roster.
The team have also extended several long-term deals with its riders including Alejandro Valverde and Alex Dowsett until the end of the 2017 season.
Anacona warmed up for the Vuelta at the Tour of Utah where he finished in third place overall which is his GC result of the year. At the Vuelta, his second grand tour of the year having also ridden the Giro d'Italia, Anacona finished in 27th place.
The Colombian most recently rode the Worlds time trial, finishing in 46th place, and will line up with his national team in Sunday's road race.
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