solar power

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Across
  1. 2. What do people put on their roofs to collect energy
  2. 5. How expensive are
  3. 6. Who invented the first solar panel
  4. 9. Solar power is noise pollution free yes or no
  5. 10. Is solar power a renewable energy
  6. 12. What are solar panels used for
Down
  1. 1. What was the first company that sold solar panels
  2. 3. How much energy do solar panels generate in one hour
  3. 4. How big are solar panels
  4. 7. It is a renewable energy
  5. 8. What are solar panels made of
  6. 11. What does the solar panels get the energy from