[reedjosh]

Solar requires energy storage. It is not on demand. Wind and solar must be backed by an on demand source as we don't have sufficiently cost effective storage methods.

Options are then basically hydroelectric, natural gas, petroleum, coal, or nuclear. Nuclear is the cleanest if you can't put a dam somewhere.

[mbgerring]

Or batteries, which are getting cheaper and are now less expensive than natural gas peaker plants in many locations

[reedjosh]

Interesting. Can you please provide a source? I've never heard as such, but would be glad to find otherwise.

[rpiguyshy]

there are many huge packs. tesla has built some of the biggest ones.