[dragontamer]

> When is there zero sun?

I mean, its not my argument. But... something like the Dust Bowl of the 1930s or even a large volcanic eruption (like the 1980s Mount St. Helen eruption) would block out the sun in a local area for multiple days.

But my point being: such disasters are beyond our storage capabilities by several magnitudes. Most energy storage projects are at best, aiming for a few hours of energy storage.

Many (ie: Flywheels, typical Batteries, etc. etc.) are aiming for minutes, or even just seconds of grid-energy storage. This idea of days-long or even a week-long energy storage is just devoid from reality.

[Pxtl]

There also just aren't that many people above the Arctic circle. 90/10 rule applies here.