Eiffage Énergie Systèmes installs a photovoltaic power plant

After clearance of the first of the two zones earmarked for construction of the 113 MWp PV plant, EDF-Re awarded the BOS works package to Eiffage Énergie Systèmes. “All the equipment for this BOS works package is supplied by EDF: structures, modules and transformer substations. We will be taking charge of the power plant's electrical design, in co-design with EDF-Re, which has sized the equipment in terms of number and dimensions. We'll also be wiring all the approved components, laying the foundations and installing structures and modules,” explained PV Branch Manager Anne Bloas Cacaud.

For the first time on the French network, our experts will be installing standard transformer substations supplied by Chinese manufacturer Huawei. These Jupiter 6000 substations incorporate a transformer and come in the form of containers. Another special feature of this project is that 60% of the structures will be founded on piles requiring concrete borings, while the remaining 40% will rest on concrete stringers. Some fifty team members from our Division will be present on the Nivouville site at the height of the works.

Another part of the air base was cleared of pollutants so that our Transmission & Distribution experts could build a 105 MVA 33/90 kV delivery substation (HVB lot), in consortium with earthworks and civil engineering contractor Jérôme BTP. “Our goal is to create a turnkey 33/90 kV delivery substation, including supply, installation and connection of high-voltage (HV/HTA) equipment: instrument transformers, circuit breakers, disconnectors, medium-voltage switchgear, etc. We are also to design and build the control and auxiliary power supply cabinets”, explained Business Manager Yannick Boucheron. An HVB substation monitoring system, custom-developed by another Branch division, will be embedded in the control cabinets, enabling remote macro and micro control of the substation by the customer. This delivery substation will be connected to the RTE power transmission network via a 90,000 V underground link. The substation is scheduled for commissioning in the summer of 2025, and will transport the electricity generated by the PV power plant to consumers. The T&D experts will be in charge of operating the facility.

Our two subsidiaries will be working hand in hand during the commissioning phase to ensure a smooth start-up of the PV power plant and delivery substation. The construction of PV power plants on this scale is a real challenge, which the Energy Systems Division is preparing to tackle as a team.

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