The History of Electricity: From Ancient Discoveries to Modern Power

In January 1746, Pieter van Musschenbroek, a physicist at the University of Leiden in the Netherlands, wrote to a colleague: “I would not take the shock again for the kingdom of France.” What he had done was hold a Leyden jar while accumulating static electricity — the resulting discharge was powerful enough to knock him from his chair. Yet paradoxically, this very incident was the first historical demonstration that electrical energy could be stored.^[1]

The history of electricity is full of such moments, where fear and wonder intersect. And that journey began on an ancient Greek shoreline, around the sixth century BCE.

Ancient Discoveries of Static Electricity

The earliest historical record of electricity dates to around 600 BCE. Thales of Miletus, an ancient Greek philosopher, observed that rubbing amber with fur caused it to attract lightweight objects such as feathers. This is the earliest known record of static electricity.^[2]

The very word “electricity” derives from the ancient Greek word for amber — “ἤλεκτρον (electron).” Amber is fossilized pine resin harvested along the Baltic coast, prized by the ancient Greeks as a precious gem. Some 2,200 years later, in 1600, the English physician William Gilbert coined the term “electric” to describe this property and conducted the first systematic study distinguishing magnetism from static electricity.^[2]

The reason amber possesses this property lies in its molecular structure. Amber holds onto electrons more tightly than cloth or animal fur, so when friction causes it to accumulate additional electrons, it acquires a negative charge. Today this is known as the triboelectric effect.

The Leyden Jar: Capturing Electricity for the First Time

Between 1745 and 1746, German clergyman Ewald Georg von Kleist and Dutch physicist Pieter van Musschenbroek independently invented the Leyden jar. This glass bottle lined with metal foil on both its inner and outer surfaces could accumulate static electricity — making it, in effect, the world’s first electrical capacitor.^[1]

The Leyden jar was more than a simple experimental tool. It demonstrated that electricity could be “contained” like a physical substance, and it later featured in Benjamin Franklin’s famous kite experiment. In 1752, Franklin flew a kite during a thunderstorm to prove that lightning was an electrical phenomenon. The realization that naturally occurring electricity and laboratory electricity were fundamentally the same thing was a stunning insight for its time.^[2]

The Voltaic Pile: The First Electric Battery

The true revolution in electrical research began on March 20, 1800, when Italian physicist Alessandro Volta invented the first electric battery. The voltaic pile consisted of alternating discs of zinc and silver (or copper), separated by paper soaked in salt water.^[3]

Volta’s invention grew out of an academic dispute. His colleague Luigi Galvani had argued, through his experiments with frog legs, that “animal electricity” was the source of vital force. Volta challenged this claim and demonstrated that electricity could be generated simply from two dissimilar metals and moisture.^[3] The debate between Galvani and Volta was more than a scholarly quarrel — it was a process that redrew the boundary between biology and physics.

Within just six weeks of Volta’s announcement, British scientists used the voltaic pile to decompose water into hydrogen and oxygen — producing an immediate ripple effect across the field of chemistry. In 1881, the unit of electromotive force, the “volt,” was named in Volta’s honor.^[4]

Faraday and Electromagnetic Induction

In 1831, the British scientist Michael Faraday achieved one of the most important discoveries in the history of electricity: electromagnetic induction. Faraday wound two coils of wire around an iron ring and found that when he passed a current through one coil, a momentary current was induced in the other.^[5]

The true significance of this discovery was the principle it revealed: a changing magnetic field generates electricity. In the same year, Faraday applied this principle to develop the first electric generator — one whose operating principle is essentially identical to that of a modern power station.^[5] Faraday, who had almost no formal mathematical training, discovered his principles through experiment and intuition. The mathematical formulation was completed in 1865 by James Clerk Maxwell.

Maxwell went on to prove mathematically that electricity, magnetism, and light are all manifestations of a single unified phenomenon. His electromagnetic equations were described by the physicist Richard Feynman as what would be judged, “from a long view of the history of mankind,” as “the most significant event of the 19th century.”^[6]

Edison, Tesla, and the War of the Currents

In the latter half of the nineteenth century, one of the most famous technological rivalries in history erupted over the question of how to distribute electricity. This was the “War of the Currents” — fought between Thomas Edison, Nikola Tesla, and George Westinghouse.

The direct current (DC) developed by Edison flows in a single direction, like a battery. Tesla’s alternating current (AC), by contrast, reverses direction at a fixed frequency and can be easily stepped up or down in voltage using a transformer.^[7] The decisive advantage of AC was transmission efficiency. By stepping voltage up to high levels, power could be delivered over long distances with minimal loss — whereas Edison’s DC system could supply electricity only within roughly 1.6 kilometers of a generating station.

Edison, unwilling to lose the royalties from his DC patents, spread claims that AC was dangerous and even staged public demonstrations in which animals were electrocuted using alternating current. The strategy ultimately failed, however. At the 1893 World’s Columbian Exposition in Chicago, Westinghouse won the contract to supply electricity using Tesla’s AC system at a far lower cost than Edison’s DC alternative.^[7]

In 1896, an AC hydroelectric plant built at Niagara Falls began delivering electricity to Buffalo, 42 kilometers away. This effectively ended the War of the Currents, and alternating current became the dominant standard in the power industry.^[7]

The Twentieth Century: How Electricity Changed the World

The end of the War of the Currents did not mean that electrification happened automatically. In the early twentieth century, the share of urban American households using electricity grew rapidly — yet as of 1930, fewer than 10% of rural areas had access.^[8] Electricity remained a privilege of the wealthy and the urban.

What closed this gap was not technology but political will. The Tennessee Valley Authority (TVA) Act signed by President Roosevelt in 1933, and the Rural Electrification Act of 1936, extended the power grid to rural communities through federal subsidies and low-interest loans. By the late 1950s — two decades after these policies took effect — electrification rates on American farms had soared from 10% to 97%.^[8]

Similar transformations unfolded elsewhere through different means. The Soviet Union, under Lenin’s direction in the early 1920s, pursued a state-led national electrification plan (GOELRO) and made it a symbol of socialist modernization. Japan built its electrical infrastructure as part of rapid industrialization following the Meiji Restoration. The spread of electricity was not merely a matter of convenience — it was a process that restructured state power and social order.

By the mid-twentieth century, the methods of generating electricity had also diversified. In 1954, the world’s first commercial nuclear power station began operating at Obninsk in the Soviet Union.^[9] Nuclear power introduced a new option alongside the existing mix of hydroelectric and thermal generation — but the accidents at Chernobyl (1986) and Fukushima (2011) also etched its dangers into the global consciousness.

Electricity Today: A Journey Still Unfinished

The share of the global population with access to electricity rose steadily, from 83% in 2010 to 91% in 2020. Yet as of 2022, roughly 730 million people still live without electricity, the majority of them concentrated in sub-Saharan Africa.^[10] More than 2,500 years after humanity first encountered electricity, the challenge of universal electrification remains unfinished.

Technologically, too, the history of electricity is entering a new chapter. The direct current that Edison lost is being reassessed in the twenty-first century. Computers, LEDs, electric vehicles, and solar panels all operate on DC. Advances in high-voltage direct current (HVDC) transmission technology have made long-distance DC power delivery viable. The War of the Currents is being waged again, in a different form.^[7]

Thales, rubbing that piece of amber, could not have known that this small act of friction would be the starting point for a force that — millennia later — would illuminate cities at night, power medical equipment, and transmit data at the speed of light. The history of electricity is the story of how humanity came to understand, fear, harness, and ultimately depend upon one of nature’s fundamental phenomena.