Travaux pour une centrale photovoltaïque au sol avec stockage batterie en autoconsommation collective sur la commune de Bréhand.

The contract has a total duration of 18 months, which includes a 12-month period for the "Garantie de Parfait Achèvement" (GPA), commencing from the service order start date.

Key phases and durations are as follows:

• There is a 4-week preparation period starting from a service order, which is included in the overall execution time.
• The execution deadlines for the different lots are:
• Lot n°1 (Photovoltaic Installation): 22 weeks from the service order start date.
• Lot n°2 (Battery Energy Storage System - BESS): 22 weeks from the service order start date.
• Lot n°3 (Roads and Various Networks + Fencing): 8 weeks from the service order start date.
• The work phasing indicates that Lot 3 will be the first to intervene, with an estimated duration of 8 weeks, followed by Lots 1 and 2, each with an estimated duration of 22 weeks.

The provisional planning for the consultation process, leading to the contract, includes:

• Publication of the consultation: August 2026
• Offer submission: September 2026
• Offer analysis and negotiation: September 2026
• Contract award: October 2026
• Contract signature and notification: November 2026

However, this planning is provisional and subject to change.

The contract start date and end date are not explicitly stated as fixed calendar dates, but are tied to the "ordre de service de démarrage".

The core scope of work for this tender, titled "Réalisation de centrales photovoltaïques avec stockage - Moulin Hesry Energies," involves the construction of photovoltaic power plants with integrated energy storage.

The project is divided into three main lots:

• Lot 1: Photovoltaic Installation - This includes the supply and installation of photovoltaic tables, PV generators (panels, inverters, electrical cabinets), associated DC and AC cabling, electrical connections to the "Tarif Jaune - PDL Revente énergie" grid, necessary VRD works for cable pathways, earthing systems, and comprehensive testing and self-control procedures. It also encompasses detailed studies (implantation, load descent, shading, production) and general site preparation documentation and infrastructure.
• Lot 2: Battery Energy Storage System (BESS) - This lot covers the supply and installation of a BESS (specifically BESS 125KW/250KWh), all related electrical and IT systems, including circuit breakers, emergency stops, surge arresters, control cabinets, and assembly. It also involves AC and DC cabling, communication cables, cable trays, and the provision of IT hardware and EMS/SCADA software (SCADA system and EMS automaton software license, control PC, IT cabinet). Earthing for the BESS and surrounding structures, along with atelier testing, on-site decoupling tests, commissioning, and administrative procedures with the concessionaire, validation, and compliance, are also part of this lot.
• Lot 3: Fencing & VRD (Various Networks and Roads) - This lot includes site preparation, the supply and installation of rigid fencing with a gate, the creation of circulation paths (light roads, material storage areas, gathering zones, BESS slab), electrical connections related to the "Tarif Jaune - PDL Revente énergie," and the provision and installation of a fire cistern (120,000 liters). It also covers earthing for the system.

Across all lots, common deliverables include site preparation, general documentation (P.A.Q., P.P.S.P.S., planning d'execution), waste evacuation, site installation elements (water/electricity meters, waste bins, life base, site panels, signage), detailed studies, and diverse works such as site cleaning before departure, delivery of the As-Built Dossier (D.O.E.), and the Later Intervention on the Structure Dossier (D.I.U.O.). The tender allows for both AC and DC coupling variants for the photovoltaic installation and BESS.