The Addicks lost two games on home soil last season as they won the League One title, but have won just four of their 17 home games in the Championship this campaign.
After being asked if he was frustrated with the club's home form, Powell told BBC Radio Kent: "Of course, extremely. Home is where the heart is. It's our pitch, our stadium and where our supporters come to support their team. It's just the way it has gone this year.
"We'll get on with it. We've just got to make sure we do our best to turn it around.
"We'll have a review at the end of the season and no doubt I will be saying I want to make The Valley a winnable place for us again."
Charlton host Burnley in the Championship on Saturday afternoon.