Exciting Fremantle forward Gemma Houghton has officially committed to expansion club Port Adelaide.

The 28-year-old capped off her sixth campaign with the Dockers this past season and will now join fellow marquee recruit, Erin Phillips, in Power colours this upcoming season.

Houghton conveyed her relief at having made her decision, announcing her excitement at being able to join Phillips at Alberton.

"I'm feeling like a weight has sort of lifted off my shoulders," she said.

"I'm obviously very excited and very keen to get over there and can't wait to catch up with Erin (Phillips) and the other players that have committed to the club already. In some ways, it's definitely emotional for me. It's a big change, but I'm feeling really happy with my decision.

"I wanted to challenge myself, take on a new opportunity and when I looked at the Port Adelaide list, the management and coaches in place, it just got me really excited. I'll be surrounded by such strong women and being an expansion team, I've got my own career path to continue to forge."

Inaugural Port Adelaide senior coach Lauren Arnell expressed her jubilation at Houghton's decision to join the fray.

"Gemma is an incredible player and we could not be happier for her to commit to Port Adelaide," Arnell said.

"She is really experienced, successful, a two-time All-Australian and one of the most athletic players in the competition. She has a really nice leap, is very quick and has the ability to bring pressure and turn games around.

"Having very capable female leaders in our program is important to what we are building at Port Adelaide and we are so excited that Gemma will add to that, particularly in the Indigenous engagement space."

Houghton's move will become official when the AFLW sign and trade period officially commences.