Solar energy

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Across
  1. 4. Conversion of light into eletricity
  2. 7. Chemical symbol: Si
  3. 8. an electrical generating station
  4. 9. an assault in which the assailant makes physical contact
Down
  1. 1. electrical device consisting of a large array of connected solar cells
  2. 2. A unit of power equal to one billion wats
  3. 3. a conductor made with semiconducting material
  4. 5. a person with advanced knowledge of one or more sciences
  5. 6. It is used to bear mechanical loads or electricity and telecommunications signals