The match against the Football Ferns will be Team GB’s first in the Olympic women’s competition and Powell is aware there will be intense media interest in the fixture.
“It is the first event, which is fantastic for us – I hope it will be a real positive,” added Powell, who is also coach of the England women’s team.
“Hopefully, because there aren’t other sports taking place that day, the media interest will be unprecedented.”
Birmingham City forward Eniola Aluko, who started a warm-up fixture against Sweden last Friday, believes the timing of the match gives her team an opportunity to inspire a generation of talent.
“It’s certainly an honour and a privilege,” Aluko said.
“You feel special – you’re one of 18 people chosen to represent the country and lots of people are looking up to you to inspire them and be a role model – so yes, honour is the word.”
Powell’s team are in Group E along with heavily fancied Brazil and relative unknowns Cameroon as well as New Zealand.
The first two in each group will definitely qualify for a quarter-final place, with two of the teams finishing third also claiming a place in the last eight.
But Powell is refusing to speculate on her team’s prospects of winning a medal.