The Alise joint venture led by VINCI Energies via its subsidiary SDEL Transport Grands Projets, in partnership with Eiffage Énergie Systèmes (50/50), has won the contract to comprehensively implement the electrical architecture of Grand Paris Express Line 15 South.

Many challenges in an urban environment

The €71 million contract covers comprehensive implementation of the 20 kV network electrical architecture from the 10 Enedis supply substations and of electricity distribution in the Line 15 South tunnels, stations and structures to the 250 low-voltage distribution boards.

Within the joint venture, Axians Rail Ile-de-France (VINCI Energies) will also roll out the optical infrastructure of the Line 15 South multi-service data transmission network. Eiffage Énergie Systèmes – Clemessy will provide electrical architecture design and implementation support for the Alise joint-venture.

The contract also covers the installations that help ensure passenger, rail tunnel and station safety (lighting, emergency service electrical outlets and telephone system, temperature rise sensors).

Beyond the technical requirements, the joint venture will be called on to manage complex worksite logistics in a dense urban environment and to meet the 70-month schedule, which includes a large number of interfaces and commissioning operations throughout the project.

Substantial social engagement

The joint venture has made a commitment to provide 2,000 hours of training and 10,000 hours of work integration throughout the project. With respect to the environment, the joint venture plans to implement an ambitious waste treatment policy and an “Environmental Protection Plan” to minimise the impact of its activities throughout the project.