this post was submitted on 30 Sep 2025
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Solarpunk technology

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Technology for a Solar-Punk future.

Airships and hydroponic farms...

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[–] calliope@retrolemmy.com 17 points 3 weeks ago

Not only is the title hilarious…

Specifically, [Dave] is using bifacial solar panels– panels that have cells on both sides. In his preferred orientation, one side faces South, while the other faces North. [Dave] is in the Northern Hemisphere, so those of you Down Under would have to do the opposite, pointing one face North and the other South.

[–] umt@lemmynsfw.com 5 points 3 weeks ago (1 children)

In his preferred orientation, one side faces South, while the other faces North. [Dave] is in the Northern Hemisphere, so those of you Down Under would have to do the opposite, pointing one face North and the other South.

[–] poVoq@slrpnk.net 6 points 3 weeks ago* (last edited 3 weeks ago) (1 children)

Sounds strange, but afaik those ~~bifocal~~ bifacial panels have a better side that should be facing where you expect the most sun.

However, I also read that putting them east west is better in some lattitudes and climates at least. Supposedly that allows better collection of low altitude sun in the morning and evening and keeps the panel cooler during mid-day. But I am not sure it is was more efficient overall or just better as a supplement to south facing roof mounted panels. Probably the latter.

[–] Jackusflackus@lemmy.world 2 points 3 weeks ago (1 children)

Did you mean bifacial panels?

[–] poVoq@slrpnk.net 0 points 3 weeks ago (1 children)

Yes, wasn't that obvious from the context?

[–] Jackusflackus@lemmy.world 2 points 3 weeks ago

Yes but you said bi focal, was just making sure

[–] HubertManne@piefed.social 3 points 3 weeks ago

I often wonder for farms if it would be worth to use it as fencing and get power as well.