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.
- A searchable project profiles database is located at the DOE Advanced Manufacturing Office webpage. Project profiles can be searched by state, CHP TAP, market sector, North American Industry Classification System (NAICS) code, system size, technology/prime mover, fuel, thermal energy use, and year installed.
- View a list of project profiles by market sector.
- View ICF International’s database of all known CHP installations in the U.S. Maintenance of the database is supported by the U.S. Department of Energy and Oak Ridge National Laboratory.
CHP Project Profile
- 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.