The commissioning of the substation is planned for summer 2025. Credit: Eiffage.

Eiffage Énergie Systèmes, the energy business division of Eiffage Group, is set to construct and commission a photovoltaic (PV) power plant and delivery substation for French renewable energy company EDF-Renouvelables (EDF-Re) on a former air base in Eure-et-Loir, France.  

The project involves a 30-year agreement between EDF-Re and the Grand Châteaudun community to utilise the site for renewable energy development. 

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EDF-Re plans to build a large-scale PV power plant with a capacity of 113 MWp [megawatts peak] at the Nivouville site.  

After clearing the first of two zones designated for construction, EDF-Re awarded the balance-of-system (BOS) works package to Eiffage Énergie Systèmes.  

Eiffage won two of the three contract lots, including HVB [high-voltage battery] and BOS works. 

The company states that, in the first instance, it will install standard transformer substations supplied by Chinese manufacturer Huawei on the French network.  

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The Jupiter 6000 substations are containerised and incorporate transformers.  

60% of the structures will be founded on piles requiring concrete borings, with the remaining 40% resting on concrete stringers. 

At peak construction, fifty team members from Eiffage will be present at the Nivouville site.  

Another section of the air base was cleared of pollutants to allow Eiffage’s transmission and distribution team to build a 105 MVA 33/90 kV delivery substation (HVB lot) in consortium with Jérôme BTP, an earthworks and civil engineering contractor. 

Eiffage Énergie Systèmes business manager Yannick Boucheron stated: “Our goal is to create a turnkey 33/90 kV delivery substation, including supply, installation and connection of high-voltage (HV/HTA [haute tension alimenté]) equipment: instrument transformers, circuit breakers, disconnectors, medium-voltage switchgear etc. We are also to design and build the control and auxiliary power supply cabinets.”  

The delivery substation will feature an HVB substation monitoring system custom-developed by another branch division. This system will enable remote macro and micro control by the customer.  

It will connect to the RTE power transmission network via a 90,000 V underground link. 

Scheduled for commissioning in the summer of 2025, the substation will transport electricity generated by the PV power plant to consumers.  

Transmission and distribution experts will manage the facility’s operations.  

Two subsidiaries of Eiffage will collaborate during commissioning to ensure a smooth start-up of both the PV power plant and delivery substation. 

In related news, Eiffage Aménagement, a European urban development company, has recently received approval to build a health-focused business hub in Saint-Apollinaire, Côte d’Or (21), Northern France.