This, in turn, will eliminate the need for subsidies, will deliver paybacks for solar plus storage of around 6-7 years in Australia and some European countries. And it will also become attractive at grid level, with solar and storage at grid parity in large parts of the world by 2030, meaning that network operators will be installing them in significant numbers.
Citigroup estimates a 240GW global market for energy storage worth more than $400 billion by that date. That is excluding car batteries.