Société du Canal de Provence et d'Aménagement de la Région Provençale is looking for partners to plan, finance and conduct works to install solar panels at the Vallon Dol reservoir site in Marseille.
Under the 20-year contract, the winner will also maintain and operate the PV installations, including the sale of energy.
The authority plans to tender a contract for the delivery of the power plants with a capacity up to 17MW, with responses due on 3 June 2019.
Interested parties have until 21 December to respond.
Meanwhile, a city in central France is seeking partners for a mixed-use development project.