Comment by abalone

12 hours ago

What’s your source for that claim? Soiling is a massive problem for desert solar, causing as high as 50% efficiency loss in the Middle East.[1]

[1] https://www.nlr.gov/news/detail/features/2021/scientists-stu...

4 comments

abalone

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Retric  11 hours ago

A relevant quote from that article.

“The reason I concentrate my research on these urban environments is because the composition of soiling is completely different,” said Toth, a Ph.D. candidate in environmental engineering at the University of Colorado who has worked at NREL since 2017. “We have more fine particles that are these stickier particles that could contribute to much different surface chemistry on the module and different soiling. In the desert, you don’t have as much of the surface chemistry come into play.”

  • abalone  5 hours ago

    You’re not summarizing the article fairly. She is saying the soiling mechanisms are environmentally dependent, not that there is no soiling in the desert. Again, it cites an efficiency hit of 50% in the ME. The article later notes that they’ve experimented with autonomous robots for daily panel cleaning, but it’s not a generally solved problem and it’s not true that “the wind takes care of it.”

    And you still haven’t provided a source for your claim.

    • Retric  43 minutes ago

      I’m saying the same thing she is, that soiling isn’t as severe in the desert not that it doesn’t exist.

      The article itself said the maximum was 50% and it was significantly less of a problem in the desert. Even 50% still beats space by miles, that only increases per kWh cost by ~2c the need for batteries is still far more expensive.

      So sure I could bring up other sources but I don’t want to get into a debate about the relative validity of sources etc because it just isn’t needed when the comparison point is solar on satellites.

    • LargoLasskhyfv  1 hour ago

      Shouldn't swarms of quadcopter drones zipping around the panels be able to handle that?

      Wouldn't even need to be that 'autonomous', since the installation is fixed.

      More like the things simulating fireworks with their LEDs in preprogrammed formation flight over a designated area.