Power's mother Philomena died when he was eight years old, leaving his father Ned, a small farmer from Tooraneena, to provide for the family.

[3] Ned later started an additional job as a welder at Boston Scientific to allow Power to travel to junior golf tournaments across Ireland.

[2] Power was recruited to play college golf at East Tennessee State University where he won five times including the Atlantic Sun Conference Championship in 2007 and 2010.

[10] In doing so, Power became the fifth player from the Republic of Ireland to win a PGA Tour event after Pat Doyle, Peter O'Hara, Pádraig Harrington and Shane Lowry.

[11] In March 2022, Power earned his maiden Masters Tournament appearance after making the quarter-finals at the 2022 WGC-Dell Technologies Match Play.