The entire industry seems to believe that Lithium Ion batteries are the be-all and end all of storing energy, but the truth is that pockets of resistance are capable of a handful of exceptions – at the lower end of the scale Vanadium flow has many commercial devotees, and at the higher end, Hot rocks, Liquid Air, and Molten Salt all have their fans – and pumped storage goes without saying, and yet there are so few live projects on the cards for pumped storage, that we felt developments in Montana were worth a mention. A company called Absaroka Energy has managed to get a pumped storage development ready for take-off, and will fire the gun the moment it has…