What? You don’t have Google? Options I know of (other than batteries and pumped hydro) : Compressed Air Energy Storage, Thermal Energy Storage, Fly wheels, Hydrogen, Supercapacitors, Gravitational Storage
The fact that you descend into complete science fiction should give you pause for thought. I doubt it will, but please think about how fantastical your proposed solutions are - “a massive lake of molten salt under every city” (I actually like that one!)…
Given you’re making up things I never said I can only imagine what you’re respinding to? Where did a massive lake of molten salt under every city come from?
- It’s not easy to go over all options.
- Many of these are largely theoretical, or for temporary storage. For instance, I don’t think fluwheels can store energy for months.
Nobody wants energy stored for months. Whatever storage is used needs to get through temporary decreases in efficiency. In places that use solar, that means from one afternoon to the next morning. In places that use wind, it means until the wind picks up. We’re talking storage on the order of tens of hours at the most.
Are you proposing that the sun may not shine and the wind not blow anywhere at all for months?
