**Competitiveness and sovereignty for sustainable aviation**

While electrification is progressing rapidly on the ground, decarbonizing air transport requires the gradual incorporation of increasing amounts of synthetic fuels (e-kerosene), beyond the limited capacity of biofuels.

Born from the combination of expertise in shipbuilding and robotics, CIRCEO is a Nantes-based startup that addresses the sector’s main bottleneck: the availability of abundant, competitive green electricity.

**Turning wind and seawater into e-kerosene**

CIRCEO deploys energy ships that operate as autonomous floating factories. An onboard wind turbine generates the electricity needed to extract CO₂ and hydrogen directly from seawater. These elements are then combined on board to synthesize e-kerosene.

**A decisive economic performance**

By producing offshore, where winds are strongest, and by avoiding the heavy costs of onshore grid connections, CIRCEO radically optimizes both the cost of renewable electricity and the production cost of e-kerosene.

This industrial model delivers unprecedented competitiveness in the sustainable fuels market, providing airlines with a scalable and economically viable solution to successfully achieve their energy transition.

**Industrial excellence in the service of the climate**

This off-grid approach ensures independence and sovereignty without placing pressure on land use or power grids. Supported by Atlanpole, CIRCEO leverages the excellence of the Loire Valley ecosystem—maritime economy, next-generation energy, IT, and production technologies—to build a forward-looking, controlled, and sustainable industrial sector.