Mitsubishi Power has put out a press release, comparing a number of salt caverns in Utah that can hold hydrogen to existing energy storage from lithium ion, and says the deal, which was originally cut over a year ago, will eventually make it the king of energy storage in the US – if it ever gets used and it isn’t just a dramatic waste of $1.9 billion. The release claims that it effectively has orders for 151,000 MWh of energy storage, which is not quite true. What it admits to are orders for 920 MWh of lithium ion short term storage, which is considerable given that Rethink has estimated that some 4,456 MWh of battery energy storage was actually installed…