Dust is a killer for consitrating solar power, but much less so for PV. You can also clean them with minimal water useage. It's just a tradeoff of how much desalination is worth it for efficiency gains.

Interesting. How about "cleaning" them with salt water? Sure the salt on the panels is not ideal, but it's better than dust.

Saltwater tends to be lead to corrosion, which is expensive to deal with.

Salt water + electricity = not good

Study mentions up to 50% of efficiency decrease after 6mo

Seems like the best solution would be mechanical cleaning (either automatic or manual)

The panels are sealed against ingress in any case.

Gaskets + insulators = problem solved.

Some sort of "spray and squeegee" system would likely even remove most of the salt. Windshield wipers for PV panels?

your link says they can just clean them once a week. that's a solved problem:

http://www.ecoppia.com/technology/

https://us.sunpower.com/blog/2017/12/04/meet-sunpowers-new-s...

or you can use a $100k panel washing truck: https://wash-bots.com/wp-content/uploads/2016/07/product2.jp...

A $100k expense and a person to drive it around cannot be a reasonable roadblock to solar, when we're talking about 100s of millions of dollars for one solar plant.

This is assuming the panel are close to the ground and not mirrors.