1. Who: Heron of Alexandria When: 1st century (AD) Why: a machine which harnesses wind energy for a purpose like grinding grain, pumping water, or generating electricity Where: England How: When there is no wind, electricity must be produced in alternative ways Windmill

2. Who: Prince Piero Ginori Coti When: Early 1900’s Why : to provide large amounts of electricity Where: Italy How: an electrical energy generated by harnessing the power contained in the earth’s internal heat Geothermal Power

3. Who: Charles Fritts When: 1980’s Why: used as a component of a larger photovoltaic system to generate and supply electricity in commercial and residential applications Where: California How: converts sunlight into energy Solar Power

4. Who: Lester Pelton When: late1880’s Why: used for milling of lumber and grain and for pumping irrigation water Where: Appleton, Wisconsin How: Hydroelectric power uses the kinetic energy of moving water to make electricity Hydroelectric Power

5. Who: Yoshio Masuda When: 1940 Why: to do useful works like electricity generation, water desalination, or the pumping of water Where: Paris How: the transport of energy by ocean surface waves, and the capture of that energy to do useful work Wave Power