New Rheinfelden hydropower plant
| New Rheinfelden hydropower plant | ||
|---|---|---|
 |
||
| location | ||
|
||
| Coordinates , ( CH ) | 47 ° 34 '8 " N , 7 ° 48' 45" O ( 628 134 / 268 766 ) | |
| country |
 Switzerland
|
|
| place | Rheinfelden AG , Rheinfelden (Baden) | |
| Waters | Rhine | |
| power plant | ||
| owner | Energiedienst AG | |
| operator | Energiedienst AG | |
| Start of planning | 1984 | |
| construction time | 2003-2012 | |
| Start of operation | 2010 | |
| technology | ||
| Bottleneck performance | 100 megawatts | |
| Average height of fall |
6.0-9.1 m | |
| Expansion flow | 1500 m³ / s | |
| Standard work capacity | 600 million kWh / year | |
| Turbines | 4 double-regulated Kaplan bulb turbines | |
| Others | ||
The new hydropower plant Rheinfelden is a run-of-river power plant on the Upper Rhine between the two opposite cities Rheinfelden AG on the Swiss side and Rheinfelden (Baden) on the German side, which went into operation in 2010. The owner is Energiedienst AG, a 100% subsidiary of Energiedienst Holding based in Laufenburg , Switzerland , which in turn is a 67% subsidiary of the German energy group EnBW Energie Baden-Württemberg .
Electricity generation is split equally between Germany and Switzerland, with Axpo AG acting as the buyer of the Swiss portion and Energiedienst Holding, which markets the green electricity generated under the name "Naturenergie" via its subsidiary Energiedienst AG as the buyer of the German portion .
history
As early as 1984, the operator of the power transmission works Rheinfelden (KWR) - one of the predecessor companies of today's Energiedienst Holding - and the canton of Aargau wanted to build a new power plant on the site of the original one. Due to the liberalization of the electricity market, however, the new building initially no longer appeared profitable and was therefore postponed. In order to ensure financing and profitability, the legislature specifically included the so-called “new large hydropower” as eligible energy in the Renewable Energy Sources Act .
In December 1989, the Swiss Federal Council and the Freiburg Regional Council had to decide whether to extend the concession for the old Rheinfelden hydropower plant for another 80 years. This was approved with the condition that a new power plant must generate higher electricity production.
For this reason, a new hydropower plant has been built since summer 2003. The cost of the new building is estimated at around 380 million euros. The new power plant was built a few hundred meters upstream from the old power plant. In contrast to the previous power plant, which stands in a longitudinal direction to the Rhine, the new machine house stands across the river. The new weir was completed in April 2007, the groundbreaking for the new machine house took place in mid-2007. In May 2007, in return, the old weir was dismantled. With the commissioning of machine 4 in December 2010, the machine house was also completed.
Rheinfelden hydropower plant October 2011
Aerial view
Ecological interventions and compensatory measures
The construction of the new power plant involves significant interventions in the river ecology of the Rhine. Among other things, a very valuable rock formation in the river bed, the so-called "Gwild", is almost 50 percent destroyed. Therefore, as part of the ecological compensation measures prescribed by nature conservation law, a total of 65 ecological upgrading measures were designed in cooperation with the relevant environmental associations and the responsible authorities from Germany and Switzerland, for which 12 million euros are being invested. Without the measures, the project would not have been approved for lack of environmental compatibility.
One of the most important compensatory measures is a near-natural, salmon-accessible spawning and fish pass to bypass the power station, which will be built in place of the old inlet channel and the old machine house by 2012. In its size of approx. 900 meters in length and approx. 60 meters in width, it was unique at the time. In the meantime, an even larger fish pass has been implemented at the Ryburg-Schwörstadt power plant. A separate passage (doping turbine) in the new building should ensure that the "Gwild" is adequately watered even at low water levels. To network the living space, two fish ladders were built. Other compensatory measures, for example the backfilling of gravel banks and the removal of bank barriers, serve, among other things, to restore the character of a flowing water to the river in suitable areas.
Because at the time of the building permit it was not yet possible to pass the ascent water under the old machine house, the old hydropower plant and the old iron power plant walkway were demolished after the new power plant went into operation.
Pedestrians and cyclists can cross the Rhine again via the weir of the new power plant.
Technical specifications
The power plant has seven weir openings, each 24.5 meters wide. The weir gunners should also serve to regulate floods . Up to 5400 cubic meters of water per second can be removed. The technical facilities with the machine house are for hydraulic reasons in the direction of the Swiss bank.
| Old power plant | New power plant | |
|---|---|---|
| Expansion water volume | 600 m³ / s | 1,500 m³ / s |
| Net gradient | 4.2-6.0 m | 6.0-9.1 m |
| Installed capacity | 25.7 MW | 100 MW |
| Turbine types | 8 Kaplan , 6 propeller and 6 Francis turbines |
4 double-regulated tubular turbines |
| Average annual production | 185 GWh | 600 GWh |
See also
Web links
- Information from Energiedienst Holding on the new construction of the Rheinfelden hydropower plant
- Katharina Prokopy: Hydropower in Rheinfelden (film), SWR television , state show on the go, May 22, 2010
Individual evidence
- ↑ Press release of Energiedienst AG from December 2, 2010 ( Memento from September 4, 2012 in the web archive archive.today ) Retrieved on January 7, 2011
- ↑ Energy Service: [1] , accessed on October 7, 2013.
- ↑ Electricity generation costs would be too high: KWR does without a new hydropower plant , on udo-leuschner.de
- ↑ Rheinfelden hydropower plant , on energiedienst.de
- ↑ Gradual new construction of the Rheinfelden power plant by 2019 , on udo-leuschner.de
- ↑ FAZ of January 18, 2011, page T6: Higher gradient and larger flow rates
- ↑ Ryburg-Schwörstadt AG power plant : Fish pass at the Schwörstadt power plant. Retrieved April 6, 2018 .
- ↑ Flyer for the new hydropower plant in Rheinfelden (pdf) Retrieved on January 7, 2011
|
The next bridge upstream: Ryburg-Schwörstadt power plant |
Bridges over the Rhine |
The next bridge down the river: Alte Rheinbrücke Rheinfelden |