Power played college ice hockey for Michigan of the National Collegiate Athletic Association (NCAA).

[3] Power opted to join the Steel to retain his NCAA eligibility as he had already verbally committed to playing for the University of Michigan.

[4][5] Power joined Michigan for the 2020–21 NCAA season, which ended with the team being forced to withdraw from the postseason due to positive tests for COVID-19.

[6] Power was selected first overall in the 2021 NHL entry draft by the Buffalo Sabres, though he elected to return to Michigan for his sophomore season, becoming the first number one overall pick to play college ice hockey since Erik Johnson in 2006.

[11] Power made his NHL debut on April 12, in a 5–2 win over the Toronto Maple Leafs,[12] and recorded his first point, an assist on a goal by Alex Tuch, two days later in a 6–2 loss to the St. Louis Blues.

[16][17] Power represented Canada senior team at the 2021 IIHF World Championship, where he recorded three assists in 10 games and won a gold medal.

[24] Following the 2023–24 NHL regular season, with the Sabres not qualifying for the 2024 Stanley Cup playoffs, Power rejoined Team Canada for the 2024 IIHF World Championship.