I think the point is that you can replace one big solar panel with one big lens and a small solar panel. The footprint on the roof is the same, but the implication is a big glass lens is cheaper than a big solar panel.
MaggiWuerze@feddit.org 2 days ago
Wouldn’t this be negated by the fact, that the same area of roof now has less actual PV cell on it? Since the light gets concentrated on a smaller area?
calculuschild@lemmy.zip 2 days ago
gandalf_der_12te@discuss.tchncs.de 1 day ago
the glass lens probably is cheaper than a big solar panel
but the cost of setting up a glass lens in 5-10 meters altitude (because that’s what’s needed to bundle any sunlight) is probably more expensive than setting up a big solar panel at hip height.
and considering that labor cost is a significant part (i guess 10% - 50%) of overall solar park cost, i guess it’s probably not worth it.
billwashere@lemmy.world 2 days ago
I think the idea is that it’s the same amount of light is being used but the actual expensive part of the solar cell is cheaper and designed to take the increased heat. So the same size “solar unit” on the roof collecting the same amount of light and generating the same amount of energy but cheaper overall. At least that was my take. Correct me if I’m wrong.
MaggiWuerze@feddit.org 1 day ago
Yeah, a similar amount for less money could be feasible. I guess. Not sure how cheap the sanding of the lens structure is though