Another quarter’s results and Energy Vault is once again looking a little more like an innovator and less like a battery module installer, with news this time of some developments around its gravity energy storage technology. In prior financial quarters you would not know that gravity system still existed. Its initial design, where 3 cranes lifted 5 ton concrete blocks into place, and then dropped them again to harvest energy, has been replaced by the tidier looking block building on the right, which slides similar blocks inside an enclosed space, to fall on pulleys to generate energy. And the weights are no longer made of concrete. It is such a dramatic change that it took quite a while to perfect…