Nowadays, renewable energy is a very popular topic. I would talk about more technologies about renewable energy as it may far away from our life. Most people would concern about the control and budget of the energy. How much money will I pay my electric bill? How can I save money on these bills? During the research, many people have a mistake about renewable energy as they think it is very experience to use renewable energy such as solar power. People need to invest a lot of money on the solar panel for the first, and they may also spend money on maintenance. I will introduce to all of you how to use renewable energy, and it can help your life and save money.