[akvadrako]

Current all-in battery costs are about $200/kWh. Daily global energy use is about 400 TWh. That would be an 80 trillion dollar battery for just one day of backup.

That just isn't feasible to build near term and it isn't even enough to prevent blackouts. Plus the current methods probably don't scale that far, so the cost is even higher.

[bryanlarsen]

We need a lot less than a day of backup.

To deal with the capriciousness of renewable energy, in order of preference:

- time of use pricing - use a mix of renewable energy sources - demand reduction incentives - interconnect regions - overprovision - storage

If the first 5 things are done well, not much storage is needed.