Seattle-area startup challenges Tesla Powerwall with hydrogen-fueled ‘Lego brick’ energy storage
https://www.geekwire.com/2025/seattle-area-startup-challenges-tesla-powerwall-with-hydrogen-fueled-lego-brick-energy-storage/Open linkView original on piefed.social
The article doesn't touch on safety concerns for this but does mention how the power walls batteries are susceptible to fires but this is making hydrogen and oxygen gas both of which are WAY MORE flammable
It is storing hydrogen in metal hydrides which is very safe.