Solar Energy

5. Solar installation has been ____ over the years.
6. New advancements in this can lead to greater potential for solar energy.
8. Solar energy can be used to power ___, boats and airplanes.
10. Solar energy is considered an ____ fuel source
11. Once installed, the energy from solar lights is ___!
12. This is the technology used to harness the sun's energy and make it usable.
13. The largest solar power plant is located here.
17. Solar energy has surged by about __ percent over the past 15 years.
18. The United States, Germany, and ___ are major markets for solar cells.
19. Solar technologies can be categorized into 2 categories; active and ____.
20. Sunny locations receive about __ hours of sunlight a day compared to 2.5 hours for cloudy locations

1. Solar lights are ___ to blackouts.
2. Solar cells are also called ___ cells.
3. Solar panels greatly reduce the emission of ___ gases.
4. 1000 watts equals 1 ___.
7. The sun generates its energy through a process called ____.
9. Use of more ___ for solar land can provide enough energy for the entire world.
14. Solar energy is not used more often because it is more ___ than using coal.
15. It takes around ___ minutes for sunlight to reach Earth
16. A typical silicon cell solar module will have a life in excess of ___ years