Latest news
Follow the news on HYDRO Exploitation: the next meetings with our clients, the exhibitions and trade fairs in which we will participate.
Ferpècle: successful anticorrosion treatment
The inner coating of the disposal well at Ferpècle had to be entirely replaced. The abrasion caused by the heavy presence of sediments in the water had... 16.12.2025Flames don’t stand a chance at the Bieudron plant
A key stage in plant security: Bieudron is being fitted with the latest generation of fire extinguisher systems. Essential modernisation to protect... 16.12.2025Injectors at the Bieudron power plant undergoing refurbishment
Group 2 at the Bieudron facility has been undergoing renovation since May 2025. A close-up of the renovation of the five injectors,... 16.12.2025Val d’Anniviers: new look for the Mottec power station
After works lasting seven years, the Mottec power station and the head at Tsarmette, the pillars of the Gougra hydroelectric complex, have... 16.12.2025A la recherche d'un métier qui a du flow ?
Découvrez nos métiers et possibilités d’apprentissage dans notre Centre de formation à Martigny le 29 novembre de 10h à 15h. 03.11.2025HYDRO TV : GEH Nendaz-Dixence - Episode 2
Changement de décor radical avec la visite de nos équipes du GEH Nendaz-Dixence. C'est le plus grand GEH chez HYDRO qui détient à lui seul quelques... 29.10.2025Auxiliary generators, a lasting solution
Long overlooked in favour of diesel motors, auxiliary generators are making a comeback. More ecological, more durable, suited to the challenges of climate... 16.09.2025Bathymetric at the Moiry reservoir
For many of our colleagues, the job comes with the privilege of working in truly spectacular natural settings. A perfect example: the recent bathymetric inspection... 16.09.2025The Grande Dixence reversible pump-turbine goes under the HYDRO microscope
The HYDRO team recorded performance measurements for the reversible pump-turbine at the Grande Dixence pumping station at... 16.09.2025Automated TIG welding: when speed meets precision
Our Martigny workshop shows how using automated TIG makes it possible to combine quality and speed of execution. Thoughts on an innovation that is... 17.06.2025Guaranteeing the durability of hydraulic installations
Regular inspection, prioritising work, coordinating activities: HYDRO applies a structured strategy to maintaining hydroelectric facilities. 17.06.2025Reactive power, a lever for grid stability
Some facilities automatically regulate their reactive power depending on grid voltage, which helps stabilisation without any human involvement. 17.06.2025Revolution in the monitoring of hydroelectric facilities
An innovative new product developed by HYDRO Exploration called VertHEX monitors the performance of hydroelectric facilities. This brings... 17.06.2025Rapport annuel 2024
HYDRO : un couteau suisse efficace et affûté pour un avenir serein 05.06.2025C'est le bon moment pour passer le flambeau
Après 10 années passées à la direction d’HYDRO, notre CEO Elmar Kämpfen, a pris sa retraite fin mai 2025. 03.06.2025Spotlight
New corporate movie 07.05.2025Eliminating vortices in the charge pumps of Forces Motrices Hongrin-Léman SA (FMHL)
The PSA charge pump on Veytaux 1 in unit no. 2 was being severely disrupted by a vortex forming at its suction... 12.03.2025HYDRO’s laser tracker in the service of astronomy
HYDRO has had a role to play in the assembly of an instrument due to be incorporated in the European Extremely Large Telescope, or ELT. This will... 12.03.2025Nant de Drance operation entrusted to HYDRO
HYDRO took over operating and maintaining the Nant de Drance power station on 1 January 2025. With a capacity of 900 MW, this giant of electricity... 12.03.2025Refurbishing a micro-hydro installation at Châtel
An ambitious refurbishment project was carried out by HYDRO’s teams. To perform the task, the engineers had to innovate and deploy new... 12.03.2025Refurbishing and overhauling a ball valve in Vernayaz for the Swiss Federal Railways
The discovery of a leak led to HYDRO carrying out an overhaul of a ball valve. Following the refurbishment, the... 12.03.2025Matthias Gäumann nommé nouveau CEO d'HYDRO Exploitation SA
Le Conseil d’administration a entériné son choix quant au successeur d’Elmar Kämpfen, l’actuel directeur d’HYDRO qui a annoncé... 16.12.2024A coordination mission to safeguard operations
HYDRO is in charge of coordinating the commissioning of the Etivaz drinking water rehabilitation project. Meticulous work to ensure safety and... 11.12.2024Bathymetry: essential for up-to-the-minute sediment management
Bathymetry is a technology that provides a precise record of the evolution of silting in reservoirs. Sediment management is gaining in... 11.12.2024Machines and engineers united for high-precision machining
Deploying state-of-the-art equipment and unique expertise, the Martigny workshops manufacture and repair components for hydroelectric power... 11.12.2024Optimising the use of water resources
Producing more energy with no additional environmental impact – the challenge accepted by Forces Motrices de Martigny-Bourg and HYDRO. 11.12.2024The machines resonate, as do our engineers
State-of-the-art technology is deployed to analyse complex vibration phenomena and ensure the reliability and safety of installations. 11.12.2024L’Hydro Alps Lab franchit un cap et intègre OIKEN à son équipe
L’Hydro Alps Lab, laboratoire de recherche appliquée dans le domaine de l’hydroélectricité fondé en 2021 par Alpiq, les... 05.12.2024Flooding: our lab ready for action!
Following the bad weather in July, our lab was called upon to check the state of the oil in the transformers affected by the floods. 23.09.2024Inspection of the Cleuson-Dixence penstock
The refurbishment of the Bieudron power station saw a wide-ranging inspection operation carried out, requiring the mobilisation of significant resources... 23.09.2024Listening to machines to better predict wear
Cavitation is rarely monitored, but causes premature wear in hydraulic machines. As part of its predictive maintenance services, HYDRO offers a dedicated... 23.09.2024Our teams on call in the event of flooding
Hydroelectric facilities are unable to prevent river flooding, but they can limit its extent. On the front line for emergencies, HYDRO’s teams do what is... 23.09.2024Analysis of facilities for CNR
As part of a project launched by Compagnie nationale du Rhône, HYDRO was tasked with analysing HV and MV protection systems. 12.09.2024Electrical engineering for Emosson
HYDRO has performed major electrical engineering work at the La Bâtiaz power station near Martigny on behalf of Electricité d’Emosson. 26.06.2024New water intake adapted to flood conditions
The Bataille water intake in the Hérens valley is no longer vulnerable to the onslaught of debris flows. HYDRO has replaced it with a model better suited... 26.06.2024Repair of a Francis turbine
Our Turbine Refurbishment and Testing Workshop in Martigny repaired a Francis turbine for Groupe E. A delicate operation. 26.06.2024Rapport annuel 2023
HYDRO consolide sa position de leader sur le marché tout en se préparant à une nouvelle ère. 18.06.2024Our central workshops: meticulousness and precision
At the end of 2023, our workshops completely overhauled and restored a head valve at Montbovon power station in the Gruyère region. It was a... 26.03.2024Vaud Jura: replacement of transformers
As part of the refurbishment of its high-voltage installations at Les Clées power station, Romande Energie commissioned HYDRO to replace the transformers on... 26.03.2024Water intake adapted to climate change
Retreat of the Tsidjiore Nouve glacier (Arolla), erosion, increased drift: the eponymous water intake has been revised to cope with the new climatic conditions. 26.03.2024INSPECTIONS BY MEANS OF GROUND DRONE
Recent months have seen a ground drone added to our mobile inspection equipment. Cutting-edge technology for high precision in small-diameter pipes. 20.12.2023THE INFINITELY SMALL AT THE SERVICE OF THE IMMENSELY LARGE
Rigour and precision are the order of the day when conducting structural deformation measurements: the data, key to the success operation of... 20.12.2023CARAVEL: CALCULATING THE VALUE OF WATER
Caravel, the online platform being developed by HYDRO and CREALP, will enable the value of water to be calculated for its various uses. In the light of the... 25.09.2023HEXITA: VOLTAGE REGULATOR MADE BY HYDRO
HYDRO has developed its own voltage regulator to manage the reactive power of synchronous machines. HEXita has already seen successful use on three machines,... 25.09.2023MOVIE: SUSTAINABLE MANAGEMENT OF WATER RESOURCES
Drawing on its expertise in hydraulic monitoring, HYDRO has produced a short video presenting its services in this field. Expertise that goes beyond... 25.09.2023ZMUTT: EUROPEAN RESEARCH PROJECT
As part of the European XFLEX HYDRO project, our teams have been working on the system controlling Zmutt’s reversible pump-turbine. The idea is to improve the... 25.09.2023Gabi power plant: designing the electrical installations
The Gabi power plant was completely demolished in the spring of 2022 in preparation for its servicing and to optimise the production of... 29.06.2023Repair of a penstock
OIKEN hired HYDRO Exploitation to carry out repair work on a penstock. A water leak had been detected during a video inspection by HYDRO in October 2022. 29.06.2023Water intake at Stafel: construction of a grit chamber
Work was carried out at the Stafel pumping station in the autumn of 2021, to improve the efficiency of its sand traps. HYDRO Exploitation... 29.06.2023Rapport annuel 2022
Un rôle majeur dans un moment clé. 20.06.2023Control-command: making good choices
A number of precautions need to be taken with the acquisition of a new control-command, which is essentially the nervous system of a hydroelectric power plant. 29.03.2023Monitoring for sediment management
The drainage basin of the Grande-Eau hydroelectric plant is monitored for the purposes of potentially adapting its mode of operation. HYDRO’s multidisciplinary... 29.03.2023RENEWAL OF ZMUTT HV STATION
It took the HYDRO teams three winters to completely renew the Zmutt high-voltage substation, which supplies the largest pumping station in Grande Dixence, nearly 60 years... 29.03.2023R10R: they were there!
Ricardo Henriques and Michel Vianin were among those spearheading the R10R (Réhabilitation Dix Rhône) project. Launched in 2016, this vast alpine project has witnessed the... 28.02.2023Integrating a penstock into the landscape
Located on a steep slope, the penstock of the Farettes (Aigle) plant was disguised with landscaping measures to reduce its visual impact. A project headed... 10.01.2023Overhaul of the valve and alternator
Called out to an EDF plant in the French Alps, our assembly team once again demonstrated its expertise in on-site work. 10.01.2023Re-commissioning the control-command unit
HYDRO Exploitation updated the Fionnay power plant’s control-command unit and connected it to Swissgrid’s HV grid. Some of the staff present had already... 10.01.2023Virtual Tour of Central Workshops
All manner of resources and expertise under one roof! Join a virtual tour to explore our Central Workshops in Martigny. 10.01.2023Cryogenic cleaning: high-performance and speed
Cleaning is an essential step in the maintenance and repair of electrical machines. The use of natural and “green” cryogenic reduces the time it... 04.10.2022Open Day
Open Day Central Workshops Martigny. HYDRO Exploitation put the small wheels on the big ones to welcome its guests at the open day. 04.10.2022Swissgrid’s show of confidence
After winning the tender to replace electrical substation AIS 220kV in Fionnay, HYDRO Exploitation was given the opportunity to fulfil the most exacting demands. 04.10.2022Technological monitoring is a must
The offer for inspecting structures with drones is evolving and HYDRO Exploitation is fully invested in this trend through its partnerships with specialised... 04.10.2022The keys to success: anticipate and coordinate
Tasked with the job of cleaning up the injectors, our Central Workshops in Martigny carried out the work in record time given the current supply... 04.10.2022Inspection of the structures: dive into the heart of the plants ages
The inspection and monitoring of civil and mechanical engineering structures is among HYDRO Exploitation’s range of high... 23.06.2022Servicing Francis turbine wheels
Repairing a Francis turbine wheel requires specialist skills that can be found at HYDRO Exploitation’s Central Workshops in Martigny. 23.06.2022Valorisation énergétique au cœur de Moiry
Pour les Forces Motrices de la Gougra, HYDRO Exploitation a piloté l’installation d’un groupe de dotation à l’intérieur du barrage. Une... 23.06.2022Welding the penstock
Ensuring the lasting quality of the plants is a priority for the owners. It is in this context that HYDRO Exploitation SA often finds itself asked to carry out such work, as in... 23.06.2022Laser tracker: flexibility and precision
Thanks to a high-performance tool, surveyors at HYDRO Exploitation have been providing highly accurate measurements and testing procedures for ten years. Not... 30.03.2022Meeting our clients
HYDRO Exploitation will be exhibiting at the Powertage in Zurich and at Aqua Pro in Bulle. 30.03.2022Why a supervisor is important
The commissioning of a hydroelectric power plant, regardless of its size, is a crucial and delicate step. Having some form of supervision offers an undeniable advantage... 30.03.2022Working for EDF in Haute-Savoie
The HYDRO Exploitation assembly team carried out maintenance work on two power plants in the French Alps at the end of last year. Quality work and adherence to... 30.03.2022Challenges for the polymechanics
Thanks to their new equipment, which cannot be found anywhere else in French-speaking Switzerland, the Central Workshops are taking on new challenges, from machining... 07.12.2021Flexibility as a reinforcement
A strategic development threatened by the movements of a geological fault, the Tine’s feeder has been revamped. HYDRO Exploitation SA proposed, studied and... 07.12.2021HVAC work at Bitsch
The Automation & Control team at HYDRO Exploitation made sure the automation of the heating, ventilation and air-conditioning system at the Bitsch plant was optimally replaced and... 07.12.2021Le premier webinaire d'HYDRO Exploitation SA
Le 1er octobre a eu lieu notre webinaire « Les Aménagements hydrauliques : Monitoring au service de l’exploitation et de l’environnement. » 27.10.2021Châteauneuf WWTP: regulations and command and control
This spring, we carried out the regulation and command and control of the aeration tanks at the Châteauneuf wastewater treatment plant (WWTP).... 28.09.2021Conformity with transmission Code 2019 (TC2019)
The transmission code (TC) is a document that defines the rules and technical requirements that must be observed by all parties playing a significant... 28.09.2021Thermodynamic method for energy optimisation
These past few months, our engineers have been working on efficiency measurements in three power plants using the thermodynamic method. Objective:... 28.09.2021Ultra-high performance fibre-reinforced concretes: an alternative to protective sheeting
Designed mainly for the construction and maintenance of civil engineering structures, UHPC is a new generation... 28.09.2021Measurements and electrical assessments
HYDRO exploitation is an expert in the maintenance of hydroelectric plants. To underpin its work, several diagnostic measures have been put in place so that... 17.06.2021Nant de Drance: advances in the commissioning
The pumped storage project at Nant de Drance entered its commissioning phase in 2018. Thanks to the specialised skills of its staff in managing and... 17.06.2021VITEOS SA: the analysis of transformer oils
VITEOS SA has been working together with our accredited oil testing laboratory for several years. This company, created with the merger of Services... 17.06.2021Bricola catchment: repair of La Maya channel
During the night of 3 October 2020, very bad weather with heavy rainfall caused damage to the La Maya channel, which holds the intake pipes for the... 03.03.2021ED –Belvédère: mechanical maintenance
EDF’s Unité de Production Méditerranée [Mediterranean generation unit] engaged us to carry out mechanical maintenance works in the Belvédère plant... 03.03.2021First artificial flooding of the river Hongrin
Artificial flooding of the river Hongrin is required annually, in response to a decision on the cleaning up of water courses in the cantons of Vaud and... 03.03.2021Services: high voltage (HV) substation engineering works
Engineering work to refurbish HV substations is just one of the services we offer customers who have entrusted the operation of their... 09.12.2020Tannuwald and Serra: refurbishment of MV substations and their internal systems (LV)
As part of the refurbishment of the Tannuwald power plant we were asked to construct a medium voltage (MV)... 09.12.2020Marécottes: refurbishment of the reservoir gates
In 2020, SBB scheduled a lengthy shutdown in order to reconstruct the penstock at Corbes, which forms an integral part of SBB’s Châtelard-Vernayaz... 08.12.2020Châtelard: quality assurance for the renewal of the Corbes high-pressure shaft.
This year (2020) major works have been carried out on the Châtelard plant, owned by CFF. In addition to the... 23.09.2020EES: Delivery of command and control
Following the replacement of group 3 ay Gondo, Energie Electrique du Simplon (EES) demonstrated its continuing confidence in us when it entrusted us with... 23.09.2020Vissoie: Replacement of the penstock
On 2 July 2018, violent storms caused nearly 40 million Swiss francs worth of damage in Val d’Anniviers. The Navizence flooded, damaging nearby infrastructure.... 23.09.2020Central workshops: a new milling centre, unique in French-speaking Switzerland
Commissioning of our new CORREA AXIA 70 milling centre in our machining workshop, to take place soon, will open up a new... 03.06.2020Mechanical measurement: we offer cutting-edge capability
In order to ensure the long-term durability of hydroelectric plants, while aiming to improve their performance, HYDRO Exploitation has... 03.06.2020Nouveau centre d'usinage dans nos ateliers
Nous sommes fiers de vous annoncer l'acquisition d'un nouveau centre d'usinage «Box in Box» modèle CORREA AXIA 70 dans nos ateliers centraux de Martigny. 18.03.2020Fossau: coordination of commissioning the plant and putting it into operation.
At the end of 2018, Energie Renouvelable Vouvry (ERV) hired us to coordinate the commissioning of their new plant, the... 04.03.2020In-house training for Swiss dam technicians
HYDRO Exploitation organised a technical training day for Swiss dam technicians in October 2019, against the impressive backdrop of the Grande Dixence Dam.... 04.03.2020La Peuffeyre: restoration of fish migration
At the end of 2019, we constructed two artificial sills on the Avançon d’Anzeinde river for our client Romande Energie SA in order to remove barriers... 04.03.2020Strengthening our transformer diagnostics services
We recently purchased two new diagnostic instruments to determine the condition of transformers and perform testing procedures. We offer these... 04.03.2020Expertise in Systems Services: the Primary Setting
The partial liberalisation of the electricity market has made systems services financially attractive for asset managers. This offers an opportunity... 23.10.2019FMA: Sublin Discharge Conduit Replacement
In 2016, FMA (Forces Motrices de l’Avançon) contracted us to replace most of the Vignasse discharge conduit, which is nearly 120 years old. This 900 mm... 23.10.2019Wheel Refurbishing Workshop: New Technologies and Expanded Performance
Our Wheel Refurbishing Workshop (RR) is dedicated to the repair of pump and turbine wheels abraded by water-borne sediments. The... 23.10.20193D Scanning & Reverse Engineering
3D scanning is a non-contact measurement technology used for data acquisition (in a scatter plot format) for the purpose of creating a solid model. Thanks to our... 19.06.2019CFF: Refurbishing of the control-command system at the Vernayaz and Châtelard plants
At the end of 2018, we were asked to renew the automated systems at the Vernayaz and Châtelard power plants by... 19.06.2019Zmutt: renewal of the Medium Voltage (MV) Substations
During the winter, HYDRO Exploitation renewed the Medium Voltage (MV) substations of the Zmutt pumping station of Grande Dixence (alt.1972 m),... 19.06.2019Analysis of underwater assets: the importance of historical data
Historic data provide the foundation for analysis of sediment behaviour in reservoir water. Our 3D reservoir mapping tools and... 13.03.2019Swiss Federal Railways: servicing of the Eau Noire water intake
Swiss Federal Railways (CFF) asked us to service the Eau Noire water intake, an integral part of the Emosson complex. They gave us a... 13.03.2019EDF: rehabilitation of the Francis groups
As part of the programme to maintain and optimise its hydropower plants, Électricité de France (EDF) entrusted us in 2017 with the rehabilitation of the... 07.12.2018Electricité de la Lienne: replacement of the group electrical protections
Energie Sion-Région SA (ESR), which operates the hydropower facility at La Lienne, chose us to replace the old electrical... 07.12.2018FMV entrusts us with the operation of its new hydropower facility
In 2018, FMV SA entrusted the operation and maintenance of its new Gletsch-Oberwald hydropower facility to HYDRO Exploitation.... 07.12.2018Centrale de Bramois : une solution contrôle-commande et supervision sur mesure
La centrale hydroélectrique de Bramois, qui turbine les eaux du bassin de Vex, a été récemment réhabilitée sur... 27.08.2018Le Laser Tracker, un outil au service de vos aménagements
Depuis 2011, nous travaillons avec le Laser Tracker, un outil d’une précision inégalée pour les dimensionnements d’objets... 27.08.2018Centrale de Gondo, alternateur du groupe 3 : mesures des pertes par calorimétrie
Le nouvel alternateur du groupe 3 de la centrale de Gondo est refroidi à l’air en circuit fermé. L'air circule... 13.04.2018Gebidem: une gestion des sédiments efficiente grâce à la technologie multifaisceaux
Situé au pied du glacier d’Aletsch, la retenue de Gebidem est soumise à de forts apports sédimentaires qui... 13.04.2018Pont de la Tine : contrôle-commande compact pour petite hydraulique HYDROTECK
En aval des deux groupes de la centrale du Pont-de-la-Tine (près d’Aigle), un groupe turbine-alternateur a été mis... 13.04.2018CFF Massaboden : contrôle-commande des parties hydrauliques
Le contrôle-commande des parties ainsi que les automatismes à relais des vannes de la centrale de Massaboden sont tombés en... 22.01.2018Forces Motrices de l’Aboyeu : remplacement du régulateur de tension et de la synchronisation
Après plus de 25 ans de bons et loyaux services, le régulateur de tension du groupe de l’Aboyeu... 22.01.2018Leteygeon SA : inspection de la conduite forcée
L’inspection de conduites forcées de petit diamètre est souvent un challenge notamment en raison des contraintes logistiques et sécuritaires.... 22.01.2018Renouvellement de la centrale de Bramois
Après 100 ans de bons et loyaux services, la centrale de Bramois vient de subir une cure de jouvence. Nous avons rempli le mandat d’ingénieur principal... 22.01.2018
News
Ferpècle: successful anticorrosion treatment
The inner coating of the disposal well at Ferpècle had to be entirely replaced. The abrasion caused by the heavy presence of sediments in the water had affected the installation’s anticorrosion protection.Flames don’t stand a chance at the Bieudron plant
A key stage in plant security: Bieudron is being fitted with the latest generation of fire extinguisher systems. Essential modernisation to protect the staff and installations.