Energy Vault hosted its quarterly earnings call last week, flaunting new orders in its traditional battery storage business, its foray into green hydrogen energy storage systems, and really pushing the software side of things. But there was worryingly little focus surrounding the changing direction of the company’s product offerings. Following the company’s redesign of its flagship gravity energy storage system away from stacking concrete slabs using a series of cranes and towards an enclosed system with sliding weights, interest seems to be waning relative to its other offerings. The company has secured some significant deals over the last quarter through its new traditional battery supply business – called Energy Vault Solutions – the most significant of which being a 410MW/820MWh…