Contact
QR code for the current URL

Press release Box-ID: 283334

Alpiq Holding AG Ch. de Mornex 10 1003 Lausanne, Switzerland http://www.alpiq.com
Contact Mr Carsten Glose +41 62 286 71 10
Company logo of Alpiq Holding AG
Alpiq Holding AG

Flumenthal river power station now generating additional electricity sufficient to power 1750 households

Work to increase efficiency is successfully concluded

(PresseBox) ( Olten, )
Four years of work to increase the efficiency of Flumenthal power station on the river Aare near Solothurn have come to a successful close. The modernised plant operated by Swiss energy supply company Alpiq has added six percent extra generating capacity. The additional electricity generated from renewable hydropower is enough to supply around 1750 households and comes as the product of some 30 million Swiss francs worth of investment.

Refurbishment of three horizontal-axis turbine-generator groups at the Flumenthal power station is complete after four years of work. The result is a six percent efficiency increase, corresponding to additional generating capacity of eight million kWh per year. That amount is equivalent to the electricity needed to power around 1750 households consuming an average of 4500 kWh each per year. Some 30 million Swiss francs were invested in the efficiency-improving measures.

Modernisation work underway from 2006 to 2009

Atel Hydro AG, a subsidiary of Alpiq Holding Ltd., investigated ways to increase capacity at Flumenthal power station back in 1993. Following success with model-based trials, actual work began in 2006 as part of a general refurbishment programme at the power station, which by that time had logged in excess of 270,000 operating hours. Atel Hydro AG rebuilt the first turbine-generator group over a six-month period in winter 2006/2007; refurbishment of the two other groups went ahead at staggered one-year intervals. The last turbine-generator group was returned to service early in 2009. Modernisation of the power station encompassed a general overhaul of the generating groups. New turbine shafts were fitted, there were technical modifications to the water flow around the turbine wheels, control and regulating equipment was replaced, along with switchgear used to run the generators and supply the power station's own electricity requirements.

Larger turbine wheels for increased efficiency

Installation of new, modified turbine wheels with an enlarged flow cross-section and optimised contours enabled significant improvements to turbine efficiency and water throughput capability. The end result is a power station efficiency increase of around six percent. No structural alterations to the building were needed in order to carry out the work. Discharge conditions in the Aare and elevations of the up- and downstream water levels are likewise unchanged. The modernisation work brings the power station in line with the current engineering state-of-the-art, while optimising energy-exploitation of the head of water as urged by the Swiss Federal Council's policy on energy.

Flumenthal power station - dependably generating electricity since 1970

The run-of-river power station at Flumenthal is 100 percent owned by Alpiq through its Atel Hydro AG subsidiary. It was constructed as part of a second corrective phase of the Jurassic waterways, has been in operation since 1970 and provides generating capacity of 23.7 MW. Annual power generation stands at 146 GWh after modernisation, which means that the Flumenthal power station supplies around 37,000 households with electricity. Of its concessionary stretch of the river Aare, 62.1 percent is apportioned to the Canton of Solothurn and 37.9 percent to the Canton of Bern. According to agreed terms, BKW Energie AG takes a stake in the investment and annual running costs commensurate with the Bernese share.

Alpiq Holding AG

Alpiq Holding Ltd. is the leading Swiss energy trading company and the largest energy services provider with European orientation. The Group was formed at the beginning of 2009 through the merger of the two energy pioneers Atel Holding Ltd. and Energie Ouest Suisse SA (EOS). In 2008, more than 10 000 employees in 26 countries generated a consolidated annual turnover of around 16 billion Swiss francs. Alpiq is active in the fields of electricity generation and electricity transmission, in energy sales and trading, as well as in energy services. The company is responsible for about one third of Switzerland's electricity supplies.

Further information about Alpiq under: www.alpiq.com

The publisher indicated in each case is solely responsible for the press releases above, the event or job offer displayed, and the image and sound material used (see company info when clicking on image/message title or company info right column). As a rule, the publisher is also the author of the press releases and the attached image, sound and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.
Important note:

Systematic data storage as well as the use of even parts of this database are only permitted with the written consent of unn | UNITED NEWS NETWORK GmbH.

unn | UNITED NEWS NETWORK GmbH 2002–2022, All rights reserved

The publisher indicated in each case is solely responsible for the press releases above, the event or job offer displayed, and the image and sound material used (see company info when clicking on image/message title or company info right column). As a rule, the publisher is also the author of the press releases and the attached image, sound and information material. The use of information published here is generally free of charge for personal information and editorial processing. Please clarify any copyright issues with the stated publisher before further use. In case of publication, please send a specimen copy to service@pressebox.de.