Chancy-Pougny

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Chancy-Pougny
Aerial view of the power plant on the Rhone as the border between Switzerland (above) and France (below)
Aerial view of the power plant on the Rhone as the border between Switzerland (above) and France (below)
location
Chancy-Pougny (Canton of Geneva)
Chancy-Pougny
Coordinates , ( CH ) 46 ° 9 '38 "  N , 5 ° 58' 34"  O ( 487.03 thousand  /  113180 ) coordinates: 46 ° 9 '38 "  N , 5 ° 58' 34"  O ; CH1903:  487 030  /  113180
country Switzerland , France
place Chancy (CH), Challex (FR)
Waters Rhone
Height upstream 348  m
power plant
owner Société des Forces motrices de Chancy-Pougny SA (SFMCP)
operator Société des Forces motrices de Chancy-Pougny SA (SFMCP)
Start of planning 1913
construction time 1920-1924
technology
Bottleneck performance currently 38, after renovation 49 megawatts
Average
height of fall 		approx. 11 m
Expansion flow currently 520, after modification 620 m³ / s
Standard work capacity 210 million kWh / year
Turbines 5 Francis turbines ,
currently being converted to 4 Kaplan turbines + 1 Francis turbine
Others
Website Brief description on the SIG website

Chancy-Pougny is a run-of-river power plant on the Rhone on the border between France and Switzerland . The dam is located on the border between the Swiss municipality of Chancy ( Canton of Geneva ) and the French municipality of Challex ( Département Ain ). It was named after the community of Pougny on the French side .

The facility is owned and operated by the Société des Forces motrices de Chancy-Pougny SA ( SFMCP ). This belongs to the public Services Industriels de Genève and the Compagnie nationale du Rhône .

history

An international agreement between France and Switzerland was signed in 1913 for the construction. The canton of Geneva is entitled to 64.6% of the energy, France 35.4%.

The facility was built from 1920 to 1924. The difference in altitude is about 11 m. The power plant has five Francis turbines with a total output of 38 MW and an average annual production of 210 GWh. The western overflow weir was built a little wider so that it can later be converted into a lock. On a plateau above the power plant on the Swiss side, a small settlement for employees with eight houses (five of which are semi-detached) was built.

At first all electricity production was directed to France and mainly used by the Schneider works in Le Creusot . Since 1965, all production has been used by Services Industriels de Genève for electricity consumption in the canton of Geneva.

modification

The original power plant had a maximum water flow rate of 520 m³ / s. This was less than the maximum water flow rate of the Barrage de Verbois 7 km above , so that at some times part of the Rhone runoff was directed over the overflow weirs. In order to avoid this loss and to increase the efficiency of the plant, the renovation and conversion of the power plant was also planned when the concession was renewed in the 1990s. The concession was renewed in 2001 for a further 60 years until April 8, 2061.

During the conversion, four of the five Francis turbines will be replaced by more powerful Kaplan turbines (the fifth machine will initially remain in its old condition). According to this, the water flow rate will be 620 m³ / s instead of 520 m³ / s, the total installed output 49 MW instead of 38 MW and the average annual production 250 GWh instead of 210 GWh. The four turbines will be gradually replaced. The first new Kaplan turbine was inaugurated in 2006. The fourth is to be installed in 2012–2013. The end of the renovation is planned for 2019. The earthquake resistance of the dam is also being improved and a fish ladder is being built on the right bank .

Web links

Individual evidence

  1. ^ Agreement of October 4, 1913 with France regarding the generation of hydropower from the Rhone between the projected La Plaine power station and a point to be determined above the Pougny-Chancy bridge
  2. ↑ a b Decision of 2003 by the Federal Department for the Environment, Transport, Energy and Communication on the concession (French; PDF; 540 kB)
  3. ↑ Communication from the Federal Department for the Environment, Transport, Energy and Communication dated May 19, 2003