Re: Gurgling Cheese!
The current hot favourites are li-ion based fast reacting grid stabilising batteries.
If you believe the hype, a wave of green energy hydrolysis plants are due from 2023, to store the excess renewable/nuclear power in large quantities. This sounds more plausible, as they already exist, and if the options are 1) switch off your solar/wind farm, or b) use the "free/cheap" energy to create hydrogen fuel, it's not a terrible idea. Need to get the costs down 60-70% though for mass market.
Biting the hand that feeds IT
