GE Energy supplies 40 Jenbacher engines for German biogas

16 October 2006 — GE Energy is supplying 40 high-efficiency, JMS 312 units to renewable energy developer, NAWARO Bioenergie AG, Leipzig, for an agricultural biogas project in eastern Germany, near the Polish border.

Each of GE’s 500 kW Jenbacher engines is being installed in separate plants to support the new combined heat and power (CHP) bioenergy park “Klarsee,” adjacent to farmland in the town of Penkun in Mecklenburg-Vorpommern. GE’s 40 units will utilize biogas created during the fermentation of agricultural waste, including maize, crop residues and animal manure. Residual material in the digester can be used as a valuable fertilizer.

Normally, agricultural wastes decompose gradually to create methane, a potent greenhouse gas. However, by capturing the gas and using it as fuel, less of it is free to escape into the atmosphere.

In all, GE’s Jenbacher engines will provide 20 MW of electricity and 22 MW in thermal output. While the engines’ electricity will be sold to the local grid, a separate, specially designed heat recovery system will deliver the engines’ thermal output to an adjacent fertilizer production facility on the farmland.

Each biogas plant has a maximum electrical output of 500 kW. Therefore, the projects qualify under Germany’s Renewable Energy Law (EEG) for “feed-in” tariffs and “CHP bonus incentives” for fully utilizing the engines’ heat. Under EEG, biogas plants are guaranteed a minimum price for supplying electricity for a period of 20 years.