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Level A1 – BeginnerCEFR A1
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?
