NESSIE THE DREDGER

#5 NESSIE THE DREDGER

An environmentally friendly pool cleaning robot for dams.


THIS PROJECT IS PRESENTED BY EDF GROUP TEAM

Stéphane Caffo

Stéphane Caffo EDF Hydro

Gilles Yahiaoui

Gilles Yahiaoui EDF Hydro

Julie Mosseri

Julie Mosseri EDF Hydro

Valérie Gambiez

Valérie Gambiez Group Purchasing Division

In a word

Nessie the Dredger suctions reservoir sediments and dispatches them to rivers in order to improve dam productivity, with zero environmental impact.

The project

Sedimentation is a natural process that takes place in dam reservoirs. However, high concentrations of such sediments impact adversely on electricity generation and on water storage capacity (drinking water, irrigation). Based on current sedimentation forecasts, it is estimated that dams worldwide will have lost 50% of their storage capacity by 2050.

Dredging operations are undertaken in a drive to reduce volumes of sediments, but costs remain high and there are strict restrictions to comply with environmental requirements, particularly regarding the concentration of sediments released into rivers.

A genuine innovation, Nessie the Dredger is an oversized pool cleaning robot: it continuously suctions and expels sediments from the reservoir to the river. Fully autonomous, it can negotiate all terrains, float, dredge to a depth of 300m, and extract up to 2400 tons of sediments over a 24-hour period. It adapts its actions in real time to operating constraints and environmental challenges.

It eliminates significant operating losses by delivering competitive dredging costs.

Nessie the Dredger can operate in all dams and canals in France and worldwide.

Why is this a game changer ?

0 production loss
during dredging operations.
An estimated saving of up to 1 million
for dredging the Chambon dam reservoir.
0 impact on the environment
2 years
taken to develop the Nessie solution, thanks to an innovation partnership agreement, an innovative purchase contract that contributed to the rapid development of the robot.

EDF Pulse Internal Awards Calendar

1

6 January 2020

Launch of the 7th edition of the EDF Pulse Internal Awards.
2

31 January 2020

Registration closes. 330 files received.
3

11 March – 13 March 2020

Selection of the 24 finalist projects by the selection committees.
4

23 March 2020

Announcement of the 24 finalist teams
5

2 November – 1st December 2020

Employees vote for their favorite project.
6

12 January - 13 January 2021

Finalists coaching.
7

13 January 2021

Auditions before the members of the Group's Executive Committee. Awards ceremony.
8

13 January 2021

Revelation of the 7 winners!