JACKSON, Miss. (AP) — Mississippi Power Co. has fired a joint venture of KBR and W.G. Yates & Sons Construction that was building part of the $2.8 billion Kemper County power plant. The project is more than $400 million over budget and has struggled to stay on schedule.

The pair was replaced by Performance Contractors of Baton Rouge, La., which was overseeing other work at the site north of Meridian.