Generating electricity requires a motive force. Examples of generationg electricity are coal, natrual gas, nuclear, hydro electric, and renewables.45% is mine coal and yoy can burn it in power plants. Positive things that come out of using coal are its cheap, have coal power plants,and lots in the US. Negative things that come out of using coal are polution, greenhouse gases, and its only limited quality. Natrual Gas is 23%. Positive things that come with natrual gas are cheap, cleaner than coal, and lots in the US. Negative things that come withnatrual gas are greenhouse gases,and flacking damages on environment. Nuclear is 20%, splits atoms, use radiation too, and generates electricity. positive things of nuclear are no green house gases, very clean, and lots of energy from little material. Negative things with nuclear are danger of nuclear melt down, and disposal of nuclear waste. Hydro-Electric is 7% you can build dams, anduse power of water to push a tubine. Positive things of Hydro-Electric are no greenhouse gases, and creates reserves for drinking and recreation. Negative things with Hydro-Electric are disrupts river and water, and life floods lands. Renewables are 3.6% including solar power, wind power, and biofuel. Positve things that renewables have are no greenhouse gasses, free running, and unlimited quantity. Negative things that renweables have are expensive start up, it costs, and still developing technology.