Alimentation Couche-Tard Inc.'s Circle K has renewed its national brand agreement with Xyience, continuing to give its energy drink brand Xenergy access to all 4,200 locations of the convenience store chain in the United States. This marks the second year that Xyience Xenergy has been a national brand with the chain. Xyience has been a national brand for Circle K in Canada (where it does business as Couche-Tard and Mac's) since 2010.

"Circle K is very excited about continuing a national relationship with Xyience in 2012. Xyience has continually shown commitment to overall category growth as well as taken steps in customer-first initiatives, and we have a great partnership together. Our partnership will continue to grow this year," said Jim King, director of national procurement for Circle K.