The Addicks have won all three of their league outings so far this month, beating Watford, Blackpool and on Saturday sinking Blackburn 2-1.
The victory over Blackpool was only Charlton's fourth on home soil this season, and their first on a Saturday.
And Powell is looking for more of the same when the Owls visit south-east London next weekend.
"Obviously a few people would like us to win more home games, but being a manager, I just want us to win points," he said.
"For us to get another win on the road was very good for us.
"We work on our tactics, we work on what we need to do in each and every game and the players carry it out.
"Sometimes it goes for you, sometimes it doesn't, but away from home we have done very, very well.
"We've had a good January so far, and obviously now have got a home game against Sheffield Wednesday to look forward to."
- Sports & Recreation