Albert Lea WWTP

Biogas fuels this 120kW CHP system running since 2003.

Minnesota Wastewater Treatment Plant Operates 120kW Biogas CHP System

In the summer of 2003, the community of Albert Lea in Minnesota installed a 120 kW CHP system at their wastewater treatment facility. The system integrates four Capstone C-30 microturbines and utilizes the recovered heat from the turbines to both maintain the proper operating temperature of the anaerobic digester and provide a portion of the facility’s space heating requirements. The microturbines operate on methane gas created in an anaerobic digester. The anaerobic digester is utilized to treat the wastewater effluent in order to control odors and render the effluent inert.


  • Client:
  • City of Albert Lea
  • Industry:
  • WWTP
  • Location:
  • Albert Lea, Minnesota
  • System Size:
  • Four C30 (120kW)
  • Operating Mode:
  • Grid Connect
  • Controls:
  • Unison Solutions
  • Commissioning Date:
  • 2003


120 kW

Modular Bays


Yearly Output

1,000+ MWh

Energy Savings

$90,000 per year

Emissions Reduction

1,500,000 lbs/year