Presumably, actual 'solarpunk' would involve...

Actual, practical steps an average person or small community can do, to meaningfully reduce their reliance on environmentally destructive processes.

Maybe you could also extend this out into things larger organizstions could so, but the 'punk' part to me kind of implies it should be bottom up focused, not top down.

So... guerilla gardening, how to set up a solar batterypack + panels in your apartment, how to cook and can with foods so as to reduce reliance on a JIT logistics system... maybe how to run practical electronics on very low power budgets... maybe how to patch your own clothes, maintain boots/shoes, how to statt to try to set up.some kind of communal work / chore sharing or labor time based proton currency system or something...

Anti consumerism is obviously a theme here.

Its basically the same thing as being a ... sane version of a prepper, just without the insane right wing chuddery or crunchy granola woowoo mysticism attached, prepping where the plan is bug-IN, not bug-OUT.

Its about being hardy, being able to disengage from the 'built to break' economy, from ultimately ethically dubious power and water systems, that are now also getting to be much more practically dubious as well... in a way where you actually maintain a comparable standard of living... and doing that in a way that is way more realistic about 'other people exist and they will be necesssary for my own survival'.

...Any aesthetic that is crafted visually first is just a fashion trend, an art style.

A real, durable aesthetic results from, is accidentally created by... some kind of set of circumstances and/or specific practical goal.

... thats all I long way of explaining why I often get annoyed by the seeming 'cultural tourist posts.'

They're superficial, and pointless without actionable plans.

It isn't very punk to only sit around and do a whimsical world building excercise.

Punks also do shit, and change things.