The 39-year-old Welshman was excellent during the 2013/14 season curtain-raiser as the Reds eased to a 2-0 win over Wigan.
It was the perfect way for David Moyes to begin his reign as United boss and Giggs says that while there will be stiff competition from big-spending Manchester City and Jose Mourinho-led Chelsea, he has faith in the Reds' ability to deliver the goods again this term.
"It's always nice to win the Community Shield. It's a good start to the season. It's good for the new manager and everyone else concerned - we have started the season with a trophy," the veteran told PA Sport.
"It was a lot of the players' first time to win it and obviously the manager's. We wanted to win it and put on a good show.
"Winning is what this club's all about. You can't win every year, but we want to compete and give ourselves the best chance. That's what we've done over the years. We're the champions, we know how hard it is to defend, but we'll do our best."
There have been changes aplenty among the Barclays Premier League title contenders this summer, with new managers and players joining rivals Manchester City and Chelsea. That presents new challenges, but Giggs says the Reds will meet them head on.
"Obviously Mourinho has come into Chelsea and City are spending quite a bit of money, but it is not something we are worried about," he adds.