Combined Heat and Power Projects

How Landfill Gas Can Generate Energy and Revenue

DOE’s CHP Technical Assistance Partnerships (CHP TAPs) have compiled a select number of CHP project profiles that provide site specific information of operating CHP installations. 

CHP Project Profile

Gundersen Health System: Onalaska Campus

  • 1.1 MW Landfill Gas-to-Energy CHP System
  • $3.5 Million Total Project Cost
  • $400,000 Yearly Energy Savings
  • March 2012 Began Operation

In March 2012, Gundersen Health System (Gundersen) began operating a combined electric power and thermal system fueled by landfill gas at its Onalaska Campus, located in Onalaska, Wisconsin. The landfill gas, which is piped 1.5 miles from the La Crosse County landfill, is used to fuel a 1,137 kilowatt reciprocating engine generator set with heat recovery. The system is sized to completely offset the electrical energy usage of the Onalaska Campus; however, rather than using the generated electricity directly at the Campus it is sold to Xcel Energy, the local utility. Heat is recovered from the system to provide space heating and domestic hot water to the Campus buildings. Gundersen anticipates annual revenue of $500,000 from selling the generated electricity to Xcel Energy, while the county will collect around $200,000 per year from selling the landfill gas to Gundersen.  Both values should increase over time as the landfill produces more gas. In addition, Gundersen saves $100,000 annually in space heating and domestic hot water costs thanks to the thermal energy recovered from the system.

Program Contact

Cliff Haefke
.(JavaScript must be enabled to view this email address)