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Coal was used to power the modern-day steam engine created by James Watt.
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Hydropower began to be used as electricity to power arc and incandescent lighting.
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Charles Fritts created the first solar cell.
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As the use of automobiles became more common, oil production increased to power the cars.
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Wilhelm Roentgen discovered X-rays.
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The first dry steam geothermal power plant was built in Tuscany, Italy.
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Produced by W. Carrier in the U.S.
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Mercaptan began to be added to natural gas, giving it a rotten egg smell, so that leaks could be easily detected.
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Ethanol and natural gas had replaced most wood heat in homes and buildings.
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Promoted the use of wind and other alternative energy sources.
