The Powell Avenue Steam Plant project got approval for its final exterior renovation plans.

The Birmingham Design Review Committee approved the plans for the renovations Monday morning. In September, the committee approved plans for its accompanying outdoor plaza.

A representative for the project told the DRC he expects it to be under construction for the remainder of 2016. Plans approved Wednesday include new windows and skylights.

Birchfield Penuel & Associates is the architect on the project and Hoar Construction is the general contractor.

Alabama Power first announced its plans for the site to convert the historic building to a mixed-use development in July 2014. Though Alabama hasn't announced any tenants yet, the company has said it could include restaurants, entertainment space and a possible museum.

[READ MORE: A look from the top of the smokestacks: Powell Avenue Steam Plant nearly ready for tenants]