Willow Lake Cogeneration Facility Upgrade

Categories:

​Since 1988 the City of Salem has operated a 650kW cogeneration facility to generate power from biogas produced as a byproduct of wastewater treatment processes at its Willow Lake Water Pollution Control Facility. The system is at the end of its useful life and is undersized for the quantity of biogas produced.

The objectives of the Cogeneration Facility Upgrade project are:

  • Maximize the utilization of available biogas produced to produce clean and reliable renewable energy.
  • More efficiently and reliably generate electricity from biogas.
  • Utilize waste heat from electricity generation.
  • Reduce the City’s reliance on non-renewable power sources.
  • Provide environmental and economic value to the community and the City’s ratepayers.
  • Replace the existing cogeneration system, which is at the end of its useful life.

The project will upgrade the system for cogeneration of power using methane gas generated from the City's wastewater treatment process.

​Project costs

​A $3,000,000 grant from Portland General Electric's Renewable Development Fund. This funding was made possible by PGE's Green Future℠.

A $200,000 Project Development Assistance Incentive from Energy Trust of Oregon

City sewer and water rates funds.

Cost: $9,575,000

Funding Partners

This project was made possible with funding support from the Portland General Electric (PGE) Renewable Development Fund, with additional support from Energy Trust of Oregon.

Final Design Update - August 2017

​The City secured an additional $126,000 in Project Development Assistance Incentive funding from Energy Trust of Oregon in July 2017. The City is in the process of final design with construction planned to begin in late 2018.

Preliminary Design Update - June 2017

​The City secured a $3M grant from PGE’s Renewable Development Fund in April 2017. The City is in the process of hiring a design consultant for final design. Final design is scheduled to begin in June 2017 with construction planned to begin in late 2018.

 

Schematic

The new cogeneration facility at the Willow Lake Water Treatment Pollution Control Facility will produce up to 1100 kW of renewable electricity from biogas produced as a byproduct of wastewater treatment processes; enough energy to power 890 homes.

​Additional information

Contact us

Ben Haney, P.E.Senior Project ManagerPublic Works Department
Monday–Friday
8:00 a.m.–5:00 p.m.
555 Liberty ST SE RM 325
Salem OR 97301
Phone: