Hitachi Automotive Systems Americas said it has completed work on a third production plant in Walton County that will expand the company’s ability to supply the industry with new components.

The new plant, which will begin operations in 2016 and will produce electric power steering systems and variable displacement pumps, will add up to 250 jobs by March 2017. Existing operations employ about 350 workers.

Hitachi began operations in Monroe in 1996 in a facility that was formerly Unisia of Georgia, another automotive parts company.

The 70-acre site already has two production facilities that produce valve timing controls and propeller shafts.

The latest project represents an $80 million investment for the Japanese company, including new equipment for the new and existing facilities.

Hitachi Automotive Systems Americas is a subsidiary of Hitachi America Ltd. The parent company is Tokyo-based Hitachi Ltd.