Throughout our trip in China I have wondered how they get electricity to power various things. The most popular source I have seen is solar power. I have seen only one other source and they were power lines. The only time I really remember seeing them so noticeably was on our way to the great wall in Beijing. After traveling through the cities we have solar energy is definitely popular with housing and powering street lights. Seeing how they use solar energy to power such things as street lights was very interesting. Even though it might not be the most attractive thing to see but I am sure its very cost efficient. I do not know how much they save, but I wonder if it would be as cost efficient in the United States. Obviously the U.S. is not as big and less populated we drive a lot farther than the Chinese. From my understanding we drive from more rual areas to the city and travel on highways so I think it would be worth considering. Some things we would have to take into account are first if it is cost efficient, is it worth switching from another source, and would Americans accept the site of it. On the other side of powering apartment complex I believe is different. We do not nearly have the amount of people in small areas or the buildings comparable to China. So I think it would not be realistic for the U.S. to undergo a major change in that regard. I know China uses windmill, but I have not seen them. I would like to see the number of how many China has compared to the U.S.