Utility scale batteries have been dismissed by some as no more than a useful bolt-on to our existing electricity grids to help with a little bit of demand stabilisation here and there. But dramatic cost reductions, improved efficiencies, and a plethora of new innovations in how to store energy that can be delivered into the grid over long durations have all contributed towards a rapidly changing market that look set to revolutionise how we structure our global energy systems towards a fossil fuel-free future.
