energy use in the U.S. By leashabaum Period: 202 BCE to 202 hydropower https://www.hydropower.org/a-brief-history-of-hydropower Period: 30 BCE to 30 BCE water wheele https://en.wikipedia.org/wiki/Watermill Period: 1698 to 1698 steam engine www.his.com/~pshapiro/steam.engines.html Period: 1832 to 1832 electric motor https://en.wikipedia.org/wiki/Electric_motor Period: 1839 to 1839 solar panels www.energymatters.com.au/panels-modules/ Period: 1839 to 1839 fuel cell www.fuelcelltoday.com/history Period: 1882 to 1882 power plant https://en.wikipedia.org/wiki/Power_station Period: 1891 to 1891 solar water heater solarwaterheaters02.weebly.com/the-history-of-solar-water-heaters.htm Period: 1897 to 1897 light bulb www.bulbs.com/learning/history.aspx
