Answer:
Well, you must first determine where you stand on the issue. What is your opinion about using renewable energy?
If you are in favor of it, then introduce the topic as your opinion and add three supporting reasons that you will elaborate on in the body of the essay. All of that is your thesis statement.
Step-by-step explanation:
Sample starters:
Americans should only use renewable energy because x, y, and z.
Using only renewable energy in the United States will x, y, z.