"Energy" was released as the first single (except Europe) and was available as a digital download on May 27, 2008. The video premiered on July 14, 2008. It charted at number 78 on the "Billboard" Hot 100, number 21 and 72 on Hot R&B/Hip-Hop Songs and Pop 100 respectively. The single performed best in New Zealand where it charted at number 2 but failed to significantly chart elsewhere. Hilson announced in July 2009 that the single would be re-promoted as the next international single following the success of "Knock You Down". It was released in the UK as a download on September 13, 2009 and a CD single on September 14. It peaked at number 45 in the UK. "Blender" magazine ranked it number 61 on its list of "The Top 144 Songs of 2008".