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The actual date is unknown, but it was in the year 1712 that the first steam engine was developed in England to pump water out of coal mines. The first machine made 12 strokes, pumping about 10 gallons of water per stroke.
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Benjamin Franklin stood outside holding a kite with a key tied to it, and a metal rod in the middle. When lightening stuck the kite, it's energy traveled down the rod and charged the key, to which when Franlkin touched it, he got shocked. Thus proving his theory of electricy.
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Once again, the actual date is unknown but the event happened somewhere in the 1830s. However, in the 1830s, an ethanol blend becomes popular lamp fuel in the United States, thus replacing whale oil.
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Thomas Edison first succesfully tested his lightbulb.
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Charles F. Brush built the first automatically operated wind turbine for electricty production in Cleveland, Ohio.
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Prince Piero Ginori Conti tested the first geothermal power plant, which successfully lit four lightbulbs. This historic geothermal power plant is located in Larderello, Italy. Others tried to copy it, but this was the only geothermal plant until 1958. The picture is the actual power plant in Larderelly, Italy.
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On May 29, 1935, the Hoover Dam was finished on the Colorado River in Arizona. It was the largest producer of hydroelectricty until 1948.
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The exact date is unknown, but the solar cells began to lower in price and become cost effective for the land in the 1970s.
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On April 22, 2009, the first ever framework for wind energy development on the US outer continental shelf is announced!
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EPA issues first ever clean air rules for natural gas produced by fracking (hydraulic fracturing).
