One of the difficulties with long duration storage technologies tends to be the number of years it has to be in existence before anyone does anything of significance with it – we have seen this with non-lithium ion chemistries for batteries, with CAES – compressed air and with gravity systems. Only Canada’s Hydrostor CAES, California’s EnerVenue Nickel Hydrogen, have made it from start up to significant order books in the past 4 years, with Switzerland’s Energy Vault achieving the same, but mostly by adopting lithium ion instead of its native gravity technology. Form Energy only came onto our horizon in late 2019, which was before it came out of stealth and owned up to the fact that its battery technology…