Each halving in cost doubles the amount of storage you can apply to any one project for the same cost. 2 hour storage on a solar or wind farm costs around about

Each halving in cost doubles the amount of storage you can apply to any one project for the same cost. 2 hour storage on a solar or wind farm costs around about £5 per MWh, levelized over the batteries lifetime. There is no way to get around that, as far as I can see.