https://en.wikipedia.org/wiki/Romanticism

Romanticism emerged as a reaction to the Industrial Revolution. The Industrial Revolution raised productivity, but with a cost in culture and closeness-to-nature.

Where things scale and become automated, it is natural for a counter-movement to yearn for a bucolic life close to nature. Solarpunk expresses the same yearning: a desire for a rich local culture close to nature in the modern technological level.