Toyota starts test-site build for lunar regenerative fuel-cell system

(SpaceEnergy) Toyota has completed concept design of a regenerative fuel-cell system for lunar use, started basic design and begun building a Japanese test site for energy-cycle testing.

JAXA disclosed the milestones in a Space Strategy Fund progress report presented to Japan’s Space Policy Committee on 28 September and published on 29 September.

The regenerative system is being developed as an energy-storage technology for sustained lunar activity. It combines water electrolysis, hydrogen and oxygen storage and fuel-cell generation, allowing electrical energy to be stored chemically and subsequently converted back into electricity.

Toyota’s project forms part of the first phase of Japan’s Space Strategy Fund. Earlier programme requirements called for development and validation of the constituent electrolysis, fuel-storage and fuel-cell subsystems before progression to an integrated ground demonstration.

JAXA said Toyota has now finished the system’s concept-design phase and moved into basic design. Construction has also started on a domestic evaluation facility that will be used for energy-cycle testing.

The agency said the facility is scheduled to begin operating during Japan’s 2027 financial year.