Deborah Merril and James Lewis are stepping down as presidents and co-CEOs of Just Energy Group Inc.

Patrick McCullough, currently CFO of the retail energy provider, will assume the president and CEO roles on April 1. McCullough also will join the company's board of directors.

Jim Brown, currently president of Just Energy's commercial business, will replace McCullough as CFO on April 1, according to a March 20 news release.

Merril and Lewis will remain on Just Energy's board and also will provide advisory services to the company until Dec. 31.