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About the company

Type
Company

Members type
innovator
seeker

Headquarters
69004 Lyon, France

Company size
1400

Founders

Founded
1933

SDG's

  • Affordable and clean energy

  • Industry, innovation and infrastructure


Social

Website
www.cnr.tm.fr

Alliance member

CNR


Leading French producer of 100% renewable energy, which supports the territories towards energy transition

CNR is the Rhône's concessionaire and the leading French producer of exclusively renewable energy, which supports the regions towards energy transition.

Offers

Description

Status
Concept


Multipurpose river management scheme

Description
Sustanable multipurpose river management schemes combining hydropower, navigation, irrigation and other uses of water

CNR has built and operates 19 multipurpose river management schemes on the Rhone river, France. Their design and operation can serve as a model for existing or new river management schemes all around the world to adress different stakes such as run-of-the-river electricity generation, navigation and irrigation development, territory development.

Available in
Worldwide

Categories of application
Affordable and clean energy, Industry, innovation and infrastructure

Sector of application
Clean energy production, Freight transportation

Status
Implemented


River development for multiple purposes

Description
A river development solution for multiple purposes, for the production of hydroelectricity, navigation, irrigation

A river development solution for multiple purposes, for the production of hydroelectricity, navigation, irrigation, flood protection, tourism, while respecting sustainable development criteria and facilitating the integration of other renewable energy in the context of the energy transition.

Available in
Worldwide

Status
Implemented


river turbine

Description
A river turbine is a hydraulic turbine using the kinetic energy of the water (the current) to produce electricity

A river turbine is a hydraulic turbine using the kinetic energy of the water (the current) to produce electricity, in the same way that a wind turbine uses the kinetic energy of the wind. A river turbine comprises two transversal-flow vertical-axis turbines fitted with hydrodynamic fairings to improve the efficiency of the turbines. The unit is fitted on a floating barge which means that the river turbine can remain on the surface of the water and reap the benefit of maximum current speeds. There is a lifting system to keep the river turbine safe if necessary and a debris grating is fitted on the structure holding the turbine to deflect any objects floating in the water. The HydroQuest River technology has the benefit of Research & Development programmes conducted for several years in the university laboratories of the Rhône-Alpes region. Prototypes have already been tested in real-life conditions in Guyana in the Amazon region and in Orléans on the Loire. These experiments provided an opportunity not only to test the performance and efficiency of the machines, but also to study the environmental impact in the river environment. In contrast to dams, this system does not require major civil engineering work and does not present any obstacle to the flow. River turbines are suitable for all rivers with strong currents (speed > 1.2 m/s). Every river turbine will be mounted on a floating barge, approx. 7 m wide and approx. 13 m long. It will be fitted with a lifting system to move it to safety in the event of a weak flow or, in contrast, in the event of flood. During operation, the river turbine is located at an immersed depth of around 2 m. A group of 3 river turbines, arranged in a triangle with the point facing the current, will occupy a width of around 35 m in the Rhône. A comparison of river turbine energy (continuous production) with solar energy (intermittent production) shows a charge factor 2 to 4 times higher for river turbine energy. On some high-yield sites, the profitability of river turbine energy will thus be immediate. Over time, these two energy sources may be complementary on hybrid stations in very seasonal zones, alternating months of heavy rain and months of drought. River turbines are more advantageous than Diesel units for electricity production as the operating and maintenance costs of Diesel units are very high and explain the LCOE of this technology. Moreover, due to its high greenhouse gas emissions, this technology is one of the causes of climate change, which is today a challenge for everyone; the commitments of nations to the agreement signed at the 2015 Paris Climate Conference testify to this. Finally, if river turbine energy is compared to hydroelectricity, and in particular dams, the advantages of river turbines are as follows: • Rapid rollout, 10 to 16 months approx. to produce and commission a 2 MW river turbine plant. • Given the very small amount of civil engineering, no modification of ecosystems or population displacement, and society is more readily accepting of such projects. • Simplicity of operation and thus training of local maintenance agents is faster and easier. Large dams require, with the rollout of associated transport and distribution infrastructures, a rollout time in the order of 8 to 15 years, but they are designed to inject high power levels into the electricity grid. These two modes of electricity production – classic hydroelectricity by dam and river turbines – are thus complementary.

Available in
Worldwide

Categories of application
Affordable and clean energy

Sector of application
Clean energy production

Status
Implemented