There is room in the market for sodium ion batteries, especially...

There is room in the market for sodium ion batteries, especially in smaller EV's, & solid-state sodium batteries (e.g. Cerenergy) for more reliable low-cost energy storage.

But... like many investors & non-investors have said; ATC needs to get to the next of commencing construction.

Otherwise, ATC could be a cheap takeover target if they are onto something good. Some investors may think that the Fraunhofer Institutes and Research Units in Germany would not spend over $50million Euro (& more recently) developing this solid-state low-cost battery if it was not a good technology. No investment advice intended.