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Installations in operation:
more than 40 hydroelectric facilities

Operation:
our core activities

Development:
innovative solutions

Central workshops:
a special know-how

Services:
various services

Company Film:
the mountains give us their water...

Les Ateliers
Centraux:
un savoir faire
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You are here > Services > Projects

Recent projects

Every year HYDRO Exploitation undertakes more than 1,000 maintenance and repair projects.
Our engineers carry out the electrical diagnostics of our rotating machinery. Named diamHEX, these tests makes it possible to determine...
We have been working with ALPIQ and OXAND for many years on topics such as risk analysis, asset management and performance based...
Between 2012 and 2016, we designed, supplied and commissioned unit control systems for two new pump storage units (120 MW each) at the new...
We have taken over the activities of Alther & Lamon, which is based in Sion. Experienced in the monitoring and control of hydroelectric plants, the company...
From March to October 2016, our engineers Yvan Michellod and Robin Lauzière, supported by...
Our experts in non-destructive testing (NDT) can intervene on an installation in the event of an outage or during maintenance. They can thus inspect all the...
Services Industriels de Bagnes (SIB) have commissioned us to improve the availability of their seven turbine installations, with an output...
Our specialists developed two out of the common components as part of the Punt dal Gall...
The renewal works of the Bramois powerhouse are currently in progress. The four horizontal Pelton units that date back to 1915 are being replaced by two new...
In mid May 2016, we applied our underwater engineering skills and pumping solution to remove sediments. This was part of a project designed to...
We have been carrying out the maintenance of electrical substations that are associated with power generating stations for several years now. In...
At the beginning of March 2016, HYDRO Exploitation was asked by Forces Motrices de Mauvoisin (FMM) to...
In addition to geodetic monitoring for hydroelectric plants and monthly auscultation measuring, our surveyors offer services in the field of metrology and...
Our mechanical unit has evolved over the years in order to meet the ever-changing demands of the energy market. Our core business is maintenance...
In the past, pump and turbine runner repair work (Francis, Pelton, Kaplan) was exclusively performed through welding and grinding with...
On 22 December 2015, the Romande Energie-owned Centrale des Farettes’ first hydroelectric production facility...
HYDRO Exploitation specialises in the area of fitness-for-service and risk analysis thanks to its experts in the fields...
The Société des Forces Motrices based in Chancy-Pougny has commissioned us to assess Group 5 at its plant in Geneva.
As part of a major overhaul of pump number 3 at Vallorcine power station, Electricité d’Emosson SA commissioned our central workshops...
Extensive renewal and rehabilitation work is being undertaken at a FMM in Fionnay. As part of this project, three spherical valves...
Putting in place appropriate measures that comply with the legal requirements to enable fish to migrate is one of the responsibilities...
With over 400 workers, almost ten years of underground work and 17 km of excavated galleries, the Nant de Drance site is nothing...

On 27 August 2015, the Consortium Punt dal Gall - TSA signed an important contract with EKW for of subaquatic work at the Punt dal Gall...
At the end of 2014, we began an overhaul of one of the two 560 kW Escher Wyss pumps from the Tremola pumping station, owned by Alpiq Hydro...
In May 2014, Alpiq Suisse SA hired us to carry out an internal inspection of the two penstocks at its Lucendro site near Airolo....
We now offer inspection and coordination of welding activities in full compliance with the latest standards. Since 1 July 2015, all...
Our electrical specialists can now offer a generator diagnostic service. This will allow us to develop synergies between the results we obtain and our expertise...
All hydraulic pumps have a zone in which they cannot function. In the case of Alpiq’s Blava station, this zone is when the discharge head lies...
The test measurements taken in June 2014 showed a very significant decrease in the insulation resistance of the pole coils of generating sets 3...
On behalf of Services Industriels de Genève, we developed an underwater non-destructive test system for the Seujet dam water intake...
As the power generating facilities in operation grow older, a core issue is whether the mechanical components such as shafts, poles,...
In June, HYDRO Exploitation SA was commissioned by Gaznat SA to inspect a high-pressure gas pipeline intersection off...
Innovation, creativity and skills were the key factors in guiding the development of a compact...
Geodetic measurements are among the services we offer our customers. They are used to measure the absolute three-dimensional displacements of...
With the commissioning of two new 120 MW FMHL generating sets (FMHL+ project), the tailrace of the Veytaux power station will...
The central workshops in Martigny have sandblasting and anti-corrosion treatment booths with the same dimensions (7.5 m x 4.50 m x...
In 2013, the Forces Motrices de Mauvoisin (FMM) began to replace the five generators at their Riddes power plant. ABB, the...
Our Central Workshops in Martigny house a group of extremely high-performance machines. Our latest acquisition is a relatively rare...
In September 2013, FMHL commissioned HYDRO Exploitation SA to determine the origin of the vibrations in the charge pump for the main pump (PSA...
As part of the analysis of the causes of the permanent distortion of the Inga 1 and 2 installations, HYDRO...
In January 2013, FMV SA commissioned us to repair the 360 kVA generator after a fault had arisen at their Riddes mini-hydropower...
Forces Motrices de la Gougra SA has appointed our civil works unit to study and remediate the Mottec equalising reservoir (150,000...
Since the beginning of 2010, we have renewed five sets of guide vanes and five of the eight Francis impellers at...
In May 2013, Les Forces Motrices de l'Engadine entrusted us with the new task of carrying out underwater monitoring at the Punt dal Gall dam (in...
Our customer, Electricité d’Emosson SA, reaffirmed its confidence by entrusting us with the renovation of a Pelton wheel from its...
We make our Laser Tracker available for all our customers. This latest of instruments enables three-dimensional measurements to be made...
Our Central Workshops overhauled an inlet nozzle and opening (an injector part of a turbine) for our client
Our machine workshop in Martigny is dedicated to the manufacture of various mechanical parts, used in servicing of mechanical components...
The Swiss electronic and micro-technical centre (CSEM), the Sensima Inspection Company and HYDRO Exploitation have embarked on a...
In mid-September 2012, our specialists examined each square centimetre of the bottom of the Dix reservoir with a multi-beam sonar, unique in...
The two DN800 PN40 spherical gate valves at the Chanrion station, owned by Les Forces Motrices de Mauvoisin (FMM), will be serviced in our...
On a mandate received last April, Alpiq Suisse SA entrusted us with the installation of control and monitoring of the two groups of 120 MW...
We began the complete repair of a Pelton wheel within the complex of our Central Workshops in Martigny for the Forces Motrices de Conches SA...
We have been mandated by EDF to overhaul an assembly of group number 3 wheel-shaft at the Bâton hydroelectric station in Ain (F). This first mandate carried out for...
During the continuation of the renovation of the development of Martigny-Bourg (FMMB) which started two years ago, considerable work was carried...
In spring 2012, an important step was taken in the carrying out of a global project, namely replacing the safety units at the Hongrin dam, owned by...
In February, we conducted several rehabilitation works for our client Rhonewerke AG in Ernen (Upper Valais). Our collaborators worked in...
Some important works have involved closing down the activities of the Electricité d'Emosson SA development – a Franco-Swiss...
Following extremely bad weather in the Lötschental last October, the Ferden dam (Upper Valais) operated by the firm EnAlpin, had to be urgently purged of...
Since mid-November, group number 3 at the Martigny-Bourg Station has been in service again having been rehabilitated in 2011....
The rehabilitation works at the Nendaz power station started on site in March 2011. This mandate was...
Until 2014, we shall be contributing to the renewal of the Control System at the Chancy-Pougny (on the French-Swiss frontier) which was brought...
Between March and August 2011, we started the anticorrosion treatment of the Dix-Rhone head. This stretches from the Grand Dixence dam to the...
Renovation of both generating sets of the Salanfe SA power station in Miéville is part of a major overhaul taking place after more than 40...
In order to manage the sand-silting of the Lac des Dix, the former EOS dam, which is nowadays submerged most of the time, serves as a sand...
HYDRO Exploitation was commissioned by Aegina AG to analyse and carry out the renovation of the Altstafel power...
After 9 years of shutdown, Bieudron power station is running...
Repair of the three MFO and three Sécheron generating sets at Fionnay power station began in 2008. It was completed in 2012....
Our strengths
Operation and maintenance
Central workshops
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HYDRO Exploitation SA
Rue des Creusets 41
CP 750 - CH-1951 Sion
T +41 (0) 27 328 44 11
F +41 (0) 27 328 44 12
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