1. The “old renewables” are _____________ and _______________.

The “new renewables” are _____________, ____________, ______________, ______________.

2. The fastest growing new renewable is __________________.

3. How much of the world’s total energy comes from renewables?  

 How much of the world’s electricity comes from renewables?           The biggest renewable source of electricity is _____________________?

4. What are the sources of energy included in the term biomass?

How are they used?

Distinguish between Biopower and Biofuels.

5. Why is Biomass energy considered renewable?

Done sustainably, what is the net effect on CO2 emissions?

6. What are the pros and cons of ethanol from corn?

What other sources make more sense, ecologically?

7. What are the pros and cons of biodiesel?

8. Which reduces net CO₂ emissions more, biodiesel or corn based ethanol? 

9. How are dairy farmers in the Central Valley using biomass to reduce their disposal and energy costs?

10. What are the pros and cons of hydroelectric power? Is it cost effective?

Is there much room for expansion of large-scale hydroelectric in the U.S.? 

11. Passive solar is used for what purposes?

12. How does Active solar differ? 

13. Solar collectors or power towers can be used to generate _______________.   Are they cost effective?

14. What are solar cells? What does PV stand for? What do they produce?

15. What are the pros and cons of PV electricity? Is PV cost effective?

16. What are the pros and cons of wind turbines? Is it cost effective?

 According to proponents, how much of the U.S. demand for electricity could be provided by wind power by 2030? 

17. What are the advantages of offshore sites?

18. How does net metering effect the deployment of renewable energy?

19. Geothermal energy comes from what source?

 What are the pros and cons of geothermal energy?

20. Is geothermal used in the US?

21. Iceland plans to change from a Carbon economy to a Hydrogen based economy. Why? What does that mean? How do plan on doing it?

22. Why is hydrogen a secondary energy source?     How is hydrogen fuel produced?

23. How is it likely to be used as an energy source?

 What is the waste product from a fuel cell?

24. What are the obstacles to developing and using hydrogen gas as an energy source?

25. In order to be “clean”, that is, non-polluting, how must the hydrogen be generated?

 26. Look at the link called Comparing CA and US sources of electricity