The pair will return to the 11-year-old series with issue #8 of the latest volume on February 8.
"This is something that I'm very embarrassed about and not happy with myself about," Bendis told Comic Book Resources regarding the long break.
"I'm certainly going to try and make it up in any way I can."
Bendis revealed that he got caught up in the development of the Powers television pilot.
"I served as an executive producer and was very involved with the other executive producers in all the decisions about bringing this to the screen," he said. "We talked about casting and met with all kinds of actors. We were there while the pilot was being filmed and were involved in every little decision like costuming.
Bendis further explained: "I didn't even realise that time was going by because in my world I was working eight to nine hours a day on Powers almost every day. There just wasn't anything that people were seeing.
"So people would ask me, 'Hey, don't you care about Powers anymore?' and I would be like, 'What are you talking about? That's all I've been doing all day'. So it was weird. Then when we were done with post production of the pilot, I started missing having Powers stuff to do and I realised I was sitting on four issues of Mike Oeming's art."
The Powers pilot remains in limbo, although Bendis recently promised that it is "still in the game".