Power began his racing career by winning a six furlongmaiden race at the Curragh in early May and then won the ListedMarble Hill Stakes at the same venue three weeks later. In the latter race, he got the better of Tough As Nails to win by a short head. In June Power was sent to England to contest the Coventry Stakes at Royal Ascot for which he started the 4/1 favourite in a field of twenty-three runners. Ridden by Ryan Moore, he was towards the back of the field before making progress to take the lead inside the final furlong to win by a neck from Roman Soldier. In August, Power returned to Ireland and started 7/4 favourite for the Group One Phoenix Stakes at the Curragh. He took the lead two furlongs from the finish but was overtaken in the last fifty yards by the fillyLa Collina who produced a "devastating turn of foot" to win by a neck. A month later, Power started second favourite for the National Stakes over seven furlongs. Ridden by Seamie Heffernan, he tracked the leaders before taking the lead inside the final furlong and held the late challenge of the favourite Dragon Pulse to win by half a length. After the race, Heffernan called him a tough, strong and genuine colt. On his final appearance of the season, Power started 15/8 favourite for the Dewhurst Stakes at Newmarket. He "kept on well" in the last furlong to finish second, beaten half a length by his fellow Irish challenger Parish Hall.
2012: three-year-old season
On his first appearance of 2012, Power was sent to Newmarket for the 2000 Guineas in which he started second favourite behind his stable companion Camelot. He made no impact in the race and was eased in the closing stages to finish seventeenth of the eighteen runners behind Camelot. Three weeks after his run at Newmarket, Power started at odds of 5/1 in the Irish 2000 Guineas. He took the lead inside the final furlong to win by a length from Foxtrot Romeo. He was ridden in the race by his trainer's son Joseph O'Brien, who described Power as "a classy horse" with "plenty of speed". Aidan O'Brien was so delighted by the result that he was unaware until told by journalists that his other runners had finished third and fourth. On 19 June, Power started favourite for the St. James's Palace Stakes at Royal Ascot, but was never in contention in a rough race and finished unplaced behind Most Improved. Power sustained an injury in the Ascot race from which he never fully recovered. In October it was announced that he would be retired to the Coolmore Stud.
Stud career
After standing for five seasons at Coolmore Stud in Ireland, Power was sold to Cambridge Stud in New Zealand where he was the leading first-season sire during the 2016-17 season. In 2019, he was relocated to Oaklands Stud in Queensland, Australia.
Notable progeny
Power has sired one Group/Grade 1 winner: c = colt, f = filly, g = gelding''
