600 BCE: Thales of Greece discovers that when elektron or amber is rubbed with silk, it creates a
static electric charge.
1600 CE: William Gilbert, an Englishman, coins the term electricity while researching electric force,
electric attraction and magnetic poles.
1675: Englishman Stephan Gray discovers electrical conductive and insulative materials.
1745: German Georg Von Kleist and Pieter van Musschenbroek both independently invent the first
capacitors.
1752: American Benjamin Franklin’s kite experiment proves that lightning is a form of natural
electricity.
1800: Italian Alessandro Volta invents the first battery and is the source of the term volt.
1808: The first electric arc lamp is produced by Sir Humphrey Davy of England as he causes a piece of
carbon to glow when attached to a battery.
1821: Michael Faraday of England discovers electro-magnetic rotation which eventually lead to the
electric motor and generator.
1826: German Georg Ohm develops Ohm’s Law, dealing with relationships between voltage, power,
current and resistance.
1835: American Joseph Henry invents the electrical relay, allowing long-distance transmission of
electricity.
1837: Thomas Davenport, an American, invents the first electric motor.
1839: Sir Robert William Grove of Scotland invents the first fuel cell using hydrogen and oxygen.
1844: American Samuel Morse invents the electric telegraph to transmit messages over long
distances.
1860s: Scotland’s J.C. Maxwell unifies electrodynamics: light, magnetism and electricity. His
discoveries lead to electric power, radio and television.
1876: American Charles Brush invents the open coil dynamo that can generate a steady current.
1878: Englishman Joseph Swan invents the first incandescent lightbulb, but it quickly burns out.
American Thomas Edison develops a long-lasting incandescent light the next year.
1879: The first electric street lamps are installed in Cleveland, Ohio and the first electric company is
founded in San Francisco.
1881: The electric streetcar is invented by E.W. v. Siemens.
1882: Edison opens New York City’s Pearl Street Power Station, capable of powering 5,0000 of
Edison’s 1,200 hour light bulbs. Unlike today’s power systems, it provided DC power instead of AC.
Wisconsin pioneers renewable energy with the world’s first hydroelectric plant.
1883: Nikola Tesla, an Austrian immigrant to America, invents the Tesla coil, making it possible to
transform electricity from low voltage to high voltage for transmission over distance.
1884: Tesla’s electric alternator provides the first alternating current. England’s Sir Charles Algernon
Parsons invents the steam turbine generator for massive electrical production.
1888: Tesla invents the first polyphase AC system, with the rights purchased by the Westinghouse
Electric Company.
1893: Westinghouse uses AC to light the World’s Fair in Chicago.
1897: The electron is discovered by England’s Joseph Thomson.
1903: Chicago opens the world’s first all-turbine power station. At the same time, the world’s largest
generator, providing 5,000 watts, was started in Shawinigan.
1911: American W. Carrier invents electrical air conditioning.
1913: American Thomas Murray invents the cinder catcher, the first air pollution control device,
while A. Goss invents the electric refrigerator.
1922: The Connecticut Valley Power Exchange pioneers interconnection between utilities.
1933: As a Depression-Era work project, the Tennessee Valley Authority was created as the first
federal electrical power authority.
1935: U.S. President Franklin Roosevelt pushes New Deal legislation to promote public utility
regulation and rural electrification.
1936: The Hoover Dam was completed, transmitting electricity through a 287 kilovolt power line
across an astounding 266 miles to Los Angeles. The Rural Electricification Act is passed, raising the
number of farms with power across the country from 11% in 1932 to nearly 50% in 1942.
1947: Bell Telephone Laboratories invents the first transistor.
1950: Canadian John Hopps learns that the human heart can be restarted using electrical
stimulation, leading to the invention of the first pacemaker.
1953: IBM invents the world’s first general-purpose computer.
1954: The world’s first nuclear power plant is opened in Russia while Bell Labs in America goes the
green route to invent the first solar cell.
1961: Commercially available integrated circuits are produced by the Fairchild Semiconductor
Corporations, replacing individual transistors. Vacuum tube technology is used for the first desktop
calculators.
1962: Spacewar!, the first computer game, was developed by America’s Steve Russell.
1973: The first PC is designed by Americans Nate Wasdsworth and Bob Findley, with 1K available
programmable memory and up to 15K additional memory available. How much is on your phone’s
memory card?
1979: The nuclear accident at the Three Mile Island Nuclear Plant makes Americans re-think this
electric power s
