We Energies ~ Rothschild Biomass Fueled Cogeneration Facility

Rothschild, Wisconsin

Project Description

We Energies' new Rothschild facility serves as a model of the effectiveness of energy recycling. It uses cogeneration, or combined heat and power, to simultaneously generate electricity and useful heat. It also serves as an example of what Boldt's unique Integrated Lean Project Delivery® (ILPD) process can accomplish.

In our role as construction manager and general contractor, we worked with the engineering firm Poyry Group to collaboratively commission, design and construct the facility. It uses forest, sawmill residue and recycled paper mill waste as a source of fuel. Low-value woods procured locally and harvested with sustainable forestry practices produce electricity while reducing greenhouse gas emissions.

Boldt’s scope of work included:

  • Over 17,000 cu. yds. of concrete installation
  • 5500 tons of steel erection
  • Boiler and pressure part erection – furnace, cyclone, backpass panels and interconnecting components
  • Boiler and pressure part welding – 3167 pressure part/tube welds
  • Installation of 21,200 LF of small bore pipe and 23,750 LF large bore pipe
  • Ductwork installation
  • Major equipment setting – condenser, deaerator, steam drum, steam turbine, generator and auxiliary boiler
  • Biomass handling system installation of major components
  • Erection of baghouse and ID fan
  • Steam turbine, generator erection and alignment
  • Auxiliary boiler installation and erection of interconnecting components

Strong leadership and a clear definition of goals in the early stages were key to the success of this project. In addition to Lean principles, we provided preconstruction, estimating, oversight detailed engineering and construction management services.

In the ILPD process, the project delivery team forms a relationship that is unique in the design and construction industry. The team members agree to collaboratively facilitate design, construction and commissioning of the projects.  

Learn more about our work in the energy market.

Architect/Engineer

Poyry

Boldt's Role

Integrated Lean Project Delivery Leader (ILPD), Construction Manager, General Contractor

Key Points

  • The cogeneration process is a much more efficient use of the energy contained in the wood fuel, compared to producing electricity or steam in separate processes. Integrated Lean Project Delivery produces a clear definition of project goals with strong leadership at the early stages of design and construction and acts as a compass for all decision-making throughout the project.