Ineo Rht

High- and extra-high-voltage underground power lines

Ineo Rht

High- and extra-high-voltage underground power lines

Ensure the reliability and durability of your electrical infrastructure with our expertise in high-voltage underground lines, from planning to operation

High-voltage (HV) and extra-high-voltage (EHV) underground power lines play a strategic role in energy transmission by ensuring the reliability, safety, and sustainability of electric grids. Faced with growing challenges related to the energy transition, the integration of renewable energy, and urbanization, electrical infrastructure must adapt to meet technical, environmental, and societal requirements.

With proven expertise covering the entire lifecycle of these facilities, Ineo RHT offers a comprehensive and innovative range of services: from studies and design through installation to commissioning. Our approach is based on a combination of advanced technical solutions, strong regulatory expertise, and a commitment to minimizing the environmental impact of projects.

With customized solutions and support at every stage, we help develop robust and high-performance infrastructure for the benefit of grid operators and local governments.

The building blocks of our service offering:

Integrated Engineering and Design Office

Preliminary Studies: Needs analysis, technical feasibility studies, and environmental impact assessments.
Detailed Design: Route engineering, selection of appropriate technologies and materials.
Soil and geotechnical studies: Analysis of site constraints to optimize the alignment.

New Construction or Renovation

Underground cables: Installation of all types of high-voltage (HV) and extra-high-voltage (EHV) cables suited to technical requirements.
Installation and connection: Trenching, installation of conduit blocks and cable troughs, cable burial, splicing, and termination.
Uncoiling in tunnels
Junction chambers: Installation of intermediate connection points for high-voltage cables.
Expertise in “suburban” environments

Innovation

Infrastructure inspection: Lidar, drones, photos, thermal cameras.
Inspecting conduits with a camera.

Our product is developed in France.

Our References

RTE – BERTHOLLET – TOLBIAC 225-kV Line

Optimize the schedule with stakeholders: a strict timeline with contractual commitments
Plan ahead and communicate with city halls by preparing signage plans, flyers, etc.
Adapt the methodology to work zones with limited right-of-way or high network density
Apply the Ineo RHT QSE process

Learn more

RTE – SAARSTAHL – LS HAYANGE ST JACQUES – ST HUBERT

Leverage the expertise of the Ineo RHT teams
Engage and communicate with city hall and local residents (flyers, route maps, information signs)
Follow the recommendations of AMO Environnement
Optimize the schedule with stakeholders: strict timeline with contractual commitment
Leverage our engineering expertise to meet Rte’s needs

Learn more

RTE – BEAULIEU – PALLICE

Rebuild the 90-kV double overhead line connecting the Beaulieu and La Pallice substations underground
Implement the Ineo RHT QSE process
Optimize the schedule with stakeholders: strict timeline with contractual commitment
Ensure transparency: clear communication with government agencies, local residents, operators, and property owners
Reduce the environmental impact of the work by optimizing construction processes
Cooperate with the responsible agency in calculating the environmental footprint

Learn more

RTE – ISLANDS OF YEU – NOIRMOUTIER

Two 225-kV underground lines to connect the offshore wind farm off the islands of Yeu and Noirmoutier
Implement the Ineo RHT QSE process
Adapt operating procedures to environmental constraints in collaboration with the Rte ecologist and the QSES department
Optimize scheduling: strict timeline with contractual commitment
Engage teams: raising awareness and engaging teams during orientation for new employees

Learn more