Owner’s Engineer Services, AQCS Compliance Program

Owner’s Engineer Services, AQCS Compliance Program
Owner’s Engineer Services, AQCS Compliance Program
Alliant Energy
Madison, Wisconsin, USA

Alliant Energy's plant modernization project creates reliable, efficient energy with less environmental impact.

As the owner's engineer, we've been by Alliant's side since the early planning stages of the Columbia Energy Center clean air compliance project. Before upgrades began, we worked to evaluate different options capable of meeting their ambitious goals of reliably and safely reducing mercury, particulate matter and sulfur dioxide emissions from two coal-fired generating units.

The best option for Columbia Energy Center was installation of an air quality control system including spray dry absorbers, pulse jet fabric filters, powdered activated carbon injection and new ID booster fans. Together with Alliant, we completed preliminary engineering, and planning and development of engineering, procurement and construction (EPC) bid documents to keep the project on track. We supported EPC contract negotiations, oversaw the contractor's final design deliverables, and provided support during installation, startup and testing at both units.

Now complete, the project's first phase ($627 million Columbia Energy Center air quality control system) finished $38 million under the approved cost, reduces emissions of mercury and sulfur dioxide by more than 90 percent, and was completed on-time with no lost-time injuries.

For the next phases, we're working with Alliant to raise the bar by once again increasing the plant's output and reliability, and decreasing emissions.


  • ENR Midwest 2015 Best Projects Award
  • POWER Magazine Top Plant Award
  • Type of Construction: Upgrade
  • Professional Services: Air Quality, Climate & Greenhouse Gases, Owner's Engineer, Program Management
  • Project Components: Air Quality Control Systems, Ash Handling Systems, Brownfields, Energy
  • Project Type: Coal-Fired Plants, Power Generation
  • Related Projects: Power, Power Generation