Saft Opens France's First Solid-State Battery Production Lines in Bordeaux
Summary
TotalEnergies affiliate Saft has inaugurated solid-state battery production lines in Bordeaux, becoming the first French manufacturer able to develop and produce cells using both sulfide and polymer electrolytes at room temperature. The company is targeting aviation and space applications, where solid-state cells promise up to 50% higher energy density and improved safety.
Saft Launches Production of France’s First Solid-State Batteries
Bordeaux, October 19, 2026 – Today, at its site in Bordeaux, TotalEnergies’ affiliate Saft will inaugurate new production lines for solid-state batteries* (those that use a solid electrolyte). Saft will be the first French manufacturer with the capacity to develop and produce solid-state batteries that use both sulfide and polymer electrolytes at room temperature, a technological combination with a wide range of applications.
Compact, safer, next-generation batteries
Solid-state batteries are seen as one of today’s most promising technologies. By replacing the traditional liquid electrolyte with a solid material, they offer increased safety in addition to energy density that is up to 50% higher than that of classic lithium-ion batteries.
They are produced using a dry electrode process, moreover, which is more environmentally responsible, cutting the CO2 emissions from this stage of production by up to 40%.
Concrete applications in aviation and space
The aim is to promote electrification in the aviation and space sectors, where gains in safety, performance and energy density are particularly valuable.
In aviation, Saft has already passed a first milestone, with the delivery of semi-solid state cells for the evaluation of future electric and hybrid aircraft architectures. Solid-state batteries have been identified as a technology that will be key to the electrification of aviation and have also attracted significant interest from the space industry.
Cedric Duclos, Chief Executive Officer, Saft, said:
Solid-state batteries are among the most promising innovations for meeting tomorrow’s electrification needs.
These new production lines mark an important milestone for Saft, as we turn several years of research into real industrial capacity, a statement of our ambition to establish France and Europe as leading players in this strategic technology.
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Saft Launches Production of France’s First Solid-State Batteries, source
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