Evergreen Energy Inc.
Evergreen Energy Inc., together with Clearwater Inc., has developed a second-generation biogas production process and installation by the use of the Hogen® technology for digestion. This technology makes all the difference, because it can convert even biomass containing lignin/cellulose into biogas.

Since 2009, Evergreen has been running a pilot digester in Mercer (Wisconsin, USA) so that it can test various input materials. Many types of biomass have been successfully tested for their digestability and gas yield. In addition to more efficient digestion, the technology also supplies a rich biogas (high CH4 content).

Evergreen Energy Inc. is responsible for the process and for the start-up of Biogas Leeuwarden.
Evergreen Energy Inc. is the co-financer of Biogas Leeuwarden BV.