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Germany's coal exit quietly progressing, likely completed by 2032 – researcher
(www.cleanenergywire.org)
Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.
As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades:

How much each change to the atmosphere has warmed the world:

Recommended actions to cut greenhouse gas emissions in the near future:

Anti-science, inactivism, and unsupported conspiracy theories are not ok here.
I think you need more than one day of energy's worth, plus there is a problem with short and cloudy winter days where you'd struggle to generate enough energy let alone store it. I'd be really curious if there are some actual studies that observe past years and calculate all this.