Optimising the use of water resources

As part of its mission to optimise hydropower production, HYDRO worked with Forces Motrices de Martigny-Bourg (FMMB) on installing Switzerland’s first very low head (VLH) turbine. This project maximised the use of available water resources at the Martigny-Bourg power station by installing the turbine in the plant’s tailrace, without incurring any additional environmental impact.

HYDRO took charge of all the civil engineering phases, from project design to implementation, an assignment that involved several teams. Close coordination with a number of stakeholders ensured that the turbine and mechanical components were properly integrated. HYDRO’s Civil Engineering and Geodesy unit was responsible for dimensioning the structural works, putting them out to tender and drawing up detailed execution plans. The company’s ability to produce precise plans meant the project could be carried out smoothly and efficiently. Support from the unit’s surveyors also enabled the boiler works to be integrated seamlessly into the structural works. HYDRO also provided logistical support, monitored site safety and security, built the power evacuation system and recovered signals from the turbine control system. The deadlines were met thanks to the involvement of our various specialists and our expertise.

Annual consumption of 200 households

This new turbine is generating some 850,000 kWh per year, equivalent to the annual consumption of 200 households. The selected configuration enabled the avoidance of any additional environmental impact, while respecting the technical constraints of the site. This project to optimise the use of water resources is thus fully in line with the objectives of the energy transition and sustainability.

Installing the turbine

Structural work - gates installed