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Egyptian systems keep solar panels free of desert dust — Level A1 — Pyramids visible over buildings and street traffic

Egyptian systems keep solar panels free of desert dustCEFR A1

21 Oct 2025

LevelA1A2B1B2

Adapted from Hazem Badr, SciDev • CC BY 2.0

Photo by kai muro, Unsplash

Level A1 – Beginner
2 min
74 words
  • Researchers in Egypt make two systems.
  • Dust makes solar panels less efficient.
  • First unit was placed in Cairo's Fifth Settlement.
  • Vibration system shakes panels two times daily.
  • It runs at noon and at 3am.
  • A wind system moves panels with the wind.
  • Field trials show smaller power loss.
  • Conventional panels lost 33 per cent in six weeks.
  • Vibration plus coating lost only 12.9 per cent.
  • Cleaning one lamppost panel can cost 200 Egyptian pounds.

Difficult words

  • panel — A flat surface used in electricity.
    panels
  • dust — Small, tiny pieces of dirt.
  • efficient — Working well without wasting energy.
  • create — To make something new.
    created
  • clean — Not dirty or marked; pure.
    cleaning
  • vibration — A quick shaking movement.
    vibrations
  • expensive — Costing a lot of money.

Tip: hover, focus or tap highlighted words in the article to see quick definitions while you read or listen.

Discussion questions

  • Why do you think self-cleaning panels are important?
  • How would dust affect other types of technology?
  • Do you believe self-cleaning technology will become more common?

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