OLBERNHAU NATURAL GAS COMPRESSOR STATION

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1 OLBERNHAU NATURAL GAS COMPRESSOR STATION

2 NATURAL GAS FOR EUROPE Natural gas, a low-emission fossil fuel with huge reserves, is regarded as the source of energy with the biggest potential for growth. The mission of GASCADE Gastransport GmbH is to ensure a secure supply of this energy vector to Europe. Gas production in Europe is declining and demand is changing. With our pipeline network, we ensure that natural gas is transported reliably from the major sources in Russia and Northwest Europe to the consumers in Central Europe. Our system takes over gas from transit pipelines at Germany s borders and transports it to the main areas of consumption within Germany and to Western and Eastern Europe. As a result, we link Germany to Poland, the Czech Republic, Belgium, the Netherlands and France.

3 PRESSURIZING GAS On its route from the source to consumers, natural gas travels many thousands of kilometers in large pipelines, during which it loses pressure as the molecules in the flow of gas rub against each other and the inside of the pipe. This loss has to be compensated for. That is done by GASCADE Gastransport GmbH s nine nationwide compressor stations, which are spaced at around 250 kilometers apart in the pipeline network. Natural gas compressors are the heart of those stations. Several impellers arranged behind each other on a shaft in a steel casing rotate at a speed of up to 9000 revolutions a minute, spinning the molecules of the inflowing gas outward and so compressing them more densely together. Gas turbines like those used in aircraft drive the compressors. For the purpose of noise control, the gas turbines are located in sound enclosures, which are in turn located in compressor houses. The gas volume is reduced when it is compressed. That means more energy can be transported through the pipeline. The pipeline s capacity increases and so does supply security for customers.

4 OLBERNHAU COMPRESSOR STATION Located on the fringes of the Central Ore Mountains in Saxony, Olbernhau compression station with its three gas turbines ensures the pressure required in STEGAL (Saxony-Thuringia Gas Pipeline). On the 50,000 square meter grounds, the gas is measures, dried and then transported further in two large pipelines. Gas can be imported from the Czech Republic, as well as exported to it. Up to 1.6 million cubic meters of natural gas an hour can flow through our pipelines. Olbernhau, which is located in the valley by the River Flöha, was the first compressor station of GASCADE, formerly WINGAS Transport. It was put into operation when STEGAL came on stream in October STEGAL is 314 kilometers in length and connects Olbernhau with MIDAL (Central Germany Pipeline Link) near Reckrod in Hesse. Our Pipeline Service East unit is located in Olbernhau. Our employees control and maintain JAGAL, STEGAL, OPAL and NEL from it. Apart from the compressor houses, the grounds have several gas drying plants, an import and export measurement plant, a utility building, a service building and a workshop.

5 TECHNICAL INFORMATION Fuel gas conditioning 1 5 Operations building 2 6 Warehouse and workshop 3 7 Gas drying plant 4 8 Intake filters Measurement building Gas coolers Compressor houses TECHNICAL DATA Compressor output 31.8 MW (2 x 9.45 MW u. 1 x 12.9 MW) Number of compressors 3 Type of gas turbine drive THM Max. operating pressure 90 bar Capacity (m³/h at normal conditions) 0.83 million Commissioned in October 1992

6 GASCADE S PIPELINE NETWORK NORD STREAM KIEL RYSUM BUNDE RHG HAMBURG SCHWERIN NEL BALGZAND BREMEN OPAL AMSTERDAM REHDEN ZEEBRÜGGE WEDAL LIPPE HANOVER MAGDEBURG JAGAL BERLIN MALLNOW FRANKFURT (ODER) BRUSSELS DÜSSELDORF COLOGNE WEISWEILER AACHEN KASSEL (HQ) STEGAL LEIPZIG RECKROD DRESDEN LUXEMBOURG FRANKFURT AM MAIN ERM MIDAL LUDWIGSHAFEN EISCHLEBEN NUREMBERG RÜCKERSDORF OLBERNHAU BRANDOV PRAGUE GASCADE PIPELINE STUTTGART GASCADE COMPRESSOR STATION OLBERNHAU COMPRESSOR STATION NEL AND OPAL NORD STREAM MUNICH VIENNA

7 CONTACT GASCADE Gastransport GmbH Headquarters Kölnische Straße Kassel, Germany Phone Fax Olbernhau Compressor Station Heinrich-Heine-Weg Olbernhau, Germany Phone