What is the key concept for this section? What is energy efficiency? What percentage of the energy
used in the United States is unnecessarily wasted?
Briefly describe two widely used energy-inefficient
technologies. What are the major benefits of improving energy efficiency? Define and give an example of cogeneration. List three other ways to save energy
and money in industry. How could an energyefficient smart electrical grid help us to save energy
and money? List three ways to save energy and
money in transportation. Explain why the true cost
of gasoline is much higher than what consumers pay
at the pump. Distinguish among hybrid, plug-in
hybrid, all-electric, and fuel-cell motor vehicles.
Summarize the story of the search for better batteries. List four ways to save energy and money (a) in new buildings, and (b) in existing buildings. List
three ways in which you can save energy and
money. Give three reasons why we are still wasting
so much energy and money.