At the 2008 Summer Olympics, Power was the nation's lone female sprinter to compete for the 200 metres. She ran in the fifth heat against seven other athletes, including defending Olympic champion Veronica Campbell-Brown of Jamaica. She finished the race in fifth place by seven hundredths of a second behind Sheniqua Ferguson of the Bahamas, outside her personal best time of 23.40 seconds. Although she was ranked below the mandatory qualifying slots, Power advanced into the next round based on her fastest time allotted in the preliminary heats. Power, however, fell short in her bid for the semi-finals, as she placed sixth in the second round, with her slowest possible time of 23.51 seconds.