The Horizeo Solar PV Park – Battery Energy Storage System is a 40,000kW energy storage project located in Saucats, Nouvelle-Aquitaine, France.

The project was announced in 2021 and will be commissioned in 2026.

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The Horizeo Solar PV Park – Battery Energy Storage System is being developed by Engie and Neoen. The project is owned by Engie (50%) and Neoen (50%), a subsidiary of Impala.

Contractors involved

Engie and Neoen are the owners. Engie and Neoen are the developers.

Additional information

The Horizeo project will include a 1 GW capacity solar farm in Saucats, Nouvelle-Aquitaine, as well as 40 MW of energy storage and a 10 MW electrolyser for green hydrogen energy generation, as well as a data centre.

About Engie

Engie SA (Engie) is an electric utility. It generates electricity using natural gas, coal, nuclear, hydro, wind, biomass and solar sources, and trades and sells that energy; supplies, distributes, trades and sells natural gas; and offers a comprehensive range of services related to the energy-efficiency. The company operates urban heating and cooling networks, and provides facility management, and other technical and management services. Engie serves customers in Latin America, North America, Europe, Africa, the Middle East, and Asia. It operates conventional and renewable facilities and has interests in various projects under development and construction stages across the world. Engie is headquartered in Paris, Ile-de-France, France.

About Neoen

Neoen SA (Neoen), a subsidiary of Impala SAS, is an independent energy company. It produces renewable energy. The company carries out the development and design; construction project management, finance, and maintenance of renewable energy power plants. It generates electricity from various renewable energy sources including solar, wind, and biomass. The company operates solar PV farms in France and lithium-ion power reserve in Hornsdale, Australia. It has operations in Jamaica, Australia, Portugal, France, Mexico, El Salvador, Argentina, Zambia, and Mozambique. Neoen is headquartered in Paris, France.


All publicly-announced energy storage projects included in this analysis are drawn from GlobalData’s Power IC. The information regarding the projects are sourced through secondary information sources such as country specific power players, company news and reports, statistical organisations, regulatory body, government planning reports and their publications and is further validated through primary from various stakeholders such as power utility companies, consultants, energy associations of respective countries, government bodies and professionals from leading players in the power sector.