GE’s biogas-fueled Jenbacher engines certified as ecomagination products

Cologne, Germany, June 1, 2006 — GE’s Jenbacher biogas-fueled engines received ecomagination certification after completing the company’s environmental and operational evaluation process.

Currently, more than 450 Jenbacher engines are operating on biogas worldwide. The systems generate 2.28 million MWh of power per year, which corresponds to fossil fuel savings equivalent to 518 million cubic meters of natural gas or 518 million liters of diesel oil.

GE’s ecomagination products are evaluated for their ability to significantly and measurably improve the customer’s environmental and operating performance. The multi-tiered review process is concluded with an independent, third party audit to ensure accuracy and thorough documentation of technological performance.

Ecomagination is GE’s commitment to address challenges such as the need for cleaner, more efficient sources of energy, reduced emissions and abundant sources of clean water. Under ecomagination, GE will invest $1.5 billion annually in research in cleaner technologies by 2010.

GE’s biogas-fueled engines are the second Jenbacher product line to receive ecomagination certification, joining GE’s coal mine methane (CMM) gas-to-energy application.

GE offers its specially modified Jenbacher engine systems, providing a combination of durability, advanced combustion and monitoring capabilities, to manage the challenging conditions of changing fuel quality and supply.

Methane, a potent greenhouse gas with 21 times the greenhouse warming potential (GWP) of carbon dioxide, is released during the anaerobic fermentation of organic materials or hard coal mining. By using biogas or coal mine methane in Jenbacher gas engines to generate power, less of the greenhouse gas is released into the atmosphere.

In Germany, GE’s eco-certified Jenbacher engines are powering a range of projects, including an agricultural biogas plant, a biogas-utilization industrial application at a paper mill, and Europe’s largest coal mine gas-fueled cogeneration plant.

In May 2006, GE began commissioning a second, eco-certified Jenbacher engine, type JMC 312 GS-B.L for its existing Jenbacher agricultural biogas system at the Wolfring estate in Fensterbach, Bavaria. The initial JMC 208 GS-B.LC, 330 kW-units has recorded 21,172 operating hours with a total efficiency of 86.4%.

The system’s closed-energy cycle uses biogas from renewable sources including grass, corn and chicken dung. The plant’s electricity is fed to the public grid and the engine’s thermal energy is used for onsite heating purposes. In the summer, the engine’s exhaust is used to dry grain and wood chips. Residual products from the biomass fermentation process serve as valuable fertilizer for the farm.

In late 2005, the German Federal Ministry of Consumer Protection, Food and Agriculture cited GE’s biogas cogeneration unit at the Wolfring estate in Fensterbach, Bavaria, as a “model solution for the ecological and economical generation of energy using agricultural biogas.”
Klingele Paper Mill Industrial Power Plant

Through the end of April 2006, the installed Jenbacher module at the Klingele Paper Mill in Weener has operated for a total of about 1,800 operating hours with 81.5% of total efficiency.

Commissioned in January 2006, the Jenbacher system is fueled with biogas, created from the mill’s waste water. The generated electricity is entirely fed in the public grid, qualifying for fixed feed-in tariffs based on the German Renewable Energy Law. The system’s waste heat is used for internal production processes.

Since entering commercial service, SaarEnergie’s coal mine gas plant — featuring 14 Jenbacher cogeneration units in Fenne, near Saarbràƒ¼cken — has supplied some 680,000 MWh of electricity for a local industrial grid and 700,000 MWh in heat for a district heating system.

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