[ncmncm]

They are only one of many. Each has an angle.

It is hard to know which are like Energy Vault, just there to scam investors, and which are onto something. I bet Terraform Industries is, at least, on the level. Whether they have the sauce to compete is a whole other question, but it will be a seller's market for a long time. That means whoever does it cheapest gets most profit.

Probably whoever manufactures equipment cheapest wins, even if their thing is not the cheapest/most efficient to use.