The electric chair stands as one of the most iconic and terrifying symbols of state-sanctioned execution. Its invention was not the work of a single mad scientist, but rather the culmination of a fierce 19th-century rivalry between two electrical titans: Thomas Edison and George Westinghouse. This battle, known as the "War of the Currents," directly led to the creation of a device designed to prove a point—that one form of electricity was deadlier than the other. The result was a method of execution that would claim over 4,300 lives in the United States before its use began to decline in the late 20th century.
Understanding who invented the electric chair requires peeling back layers of corporate competition, political maneuvering, and dubious science. This article will explore the key figures behind its development, the gruesome first execution, the scientific principles that made it work, and the ethical debates that continue to surround it today. By the end, you will have a comprehensive understanding of how a commercial rivalry gave birth to one of history’s most controversial machines.
The War of the Currents: Edison vs. Westinghouse
The invention of the electric chair cannot be understood without first examining the bitter feud between Thomas Edison and George Westinghouse. In the 1880s, Edison’s direct current (DC) electrical system was the standard for powering homes and businesses. However, DC had a major limitation: it could only transmit electricity over short distances. Westinghouse, a brilliant industrialist, championed Nikola Tesla’s alternating current (AC) system, which could travel hundreds of miles using transformers. This technological advantage threatened Edison’s entire business model.
Edison launched a massive public relations campaign to discredit AC power, claiming it was dangerously lethal. He staged public demonstrations where he electrocuted stray dogs and cats using AC current, coining the term "to be Westinghoused" as a synonym for being executed. These gruesome spectacles were designed to terrify the public into rejecting AC power. Edison even published a pamphlet titled "A Warning from the Edison Electric Light Company," which detailed the supposed dangers of AC electricity.
The rivalry reached its peak when New York State began searching for a more "humane" alternative to hanging. A commission was formed, and its members consulted Edison. Seeing an opportunity to destroy his competitor, Edison recommended AC current as the most efficient method for execution. He suggested that Westinghouse’s own technology should be used to kill condemned prisoners, thereby associating AC power with death in the public mind. This cynical move set the stage for the creation of the electric chair.
The Key Figures: Alfred Southwick, Harold Brown, and Arthur Kennelly
While Edison and Westinghouse provided the corporate backdrop, three specific individuals are most directly credited with inventing the electric chair. The first was Alfred P. Southwick, a dentist from Buffalo, New York. In 1881, Southwick witnessed an intoxicated man accidentally touch a live electrical generator and die instantly. Struck by the apparent painlessness of the death, Southwick began advocating for electricity as a more humane execution method than hanging. He later became a member of the New State Commission on Capital Punishment.
The second key figure was Harold P. Brown, a little-known electrical engineer with a grudge against Westinghouse. Brown was essentially a paid consultant for Edison, tasked with developing a practical execution device. He conducted numerous experiments on animals, including a famous demonstration where he electrocuted a horse using AC current. Brown designed the first electric chair, which consisted of a wooden chair with leather straps, a head electrode, and a leg electrode. He insisted on using Westinghouse’s AC generators, which he purchased under a false name to avoid suspicion.
The third figure was Arthur Kennelly, Edison’s chief engineer. Kennelly helped refine Brown’s design, calculating the voltage and amperage needed to ensure rapid death. He also developed the concept of using multiple jolts of electricity to overcome the body’s natural resistance. Together, Brown and Kennelly created a device that they believed would cause instantaneous unconsciousness. However, their understanding of human physiology was rudimentary at best, leading to horrific failures in the chair’s early use.
The First Execution: The Case of William Kemmler
The first person to be executed by electric chair was William Kemmler, a peddler convicted of murdering his common-law wife with a hatchet. On August 6, 1890, at Auburn Prison in New York, Kemmler was strapped into the newly built chair. The execution was a public spectacle, attended by doctors, reporters, and officials. The initial jolt of 1,000 volts of AC current lasted for 17 seconds. To the horror of the witnesses, Kemmler appeared to be dead, but his body continued to twitch and gasp for air.
Panic ensued. The prison warden ordered the current to be applied again, but the generator needed time to recharge. After a delay of several minutes, a second jolt of 2,000 volts was administered. This time, blood vessels burst under Kemmler’s skin, and his body began to smoke. The smell of burnt flesh filled the room. A reporter for the New York World famously wrote, "The scene was too terrible to describe." The entire process took approximately eight minutes, and Kemmler’s death was anything but instantaneous.
The botched execution was a public relations disaster for the proponents of the electric chair. George Westinghouse, who had tried to prevent the execution by funding Kemmler’s appeals, commented, "They could have done better with an axe." Despite this gruesome start, the electric chair remained in use. Supporters argued that the failure was due to operator error, not the technology itself. Over time, execution protocols were refined, but the chair never fully escaped its bloody origins.
How the Electric Chair Works: Science and Procedure
The electric chair operates on a simple but brutal principle: passing a high-voltage electrical current through the body to cause cardiac arrest and brain death. The condemned person is strapped into a chair with electrodes attached to the head and one leg. A saline solution or conductive gel is applied to the contact points to reduce resistance and ensure a good electrical connection. The execution typically involves two jolts of electricity, each lasting between 30 seconds and two minutes.
The first jolt, usually around 2,000 volts, is intended to destroy the brain and central nervous system. This causes immediate unconsciousness in theory, though evidence suggests this is not always the case. The second jolt, at a lower voltage, is meant to stop the heart. The current flows from the head electrode, through the brain, down the spinal cord, and out through the leg electrode. The body temperature can rise to over 130 degrees Fahrenheit, causing internal burns and, in some cases, the eyeballs to pop out.
Modern electric chairs are equipped with sophisticated controls that allow the executioner to adjust voltage and amperage. Some states use a "cyclical" method, where the current is turned on and off rapidly to prevent the body from building up resistance. Despite these refinements, the electric chair remains a deeply flawed method. Autopsies of executed prisoners often reveal severe burns, fractured vertebrae, and brain damage consistent with severe electrical trauma. The American Veterinary Medical Association has banned the use of electrocution for euthanizing animals, citing its inhumanity.
The Decline and Legacy of the Electric Chair
Key Takeaways
- ✓ The electric chair was invented as a direct result of the "War of the Currents" between Thomas Edison (DC) and George Westinghouse (AC).
- ✓ Alfred Southwick, a dentist, first proposed using electricity for execution after witnessing an accidental electrocution.
- ✓ Harold Brown and Arthur Kennelly designed the first practical electric chair, using Westinghouse’s AC current to discredit his system.
- ✓ The first execution of William Kemmler in 1890 was a gruesome failure, taking eight minutes and causing visible suffering.
- ✓ The electric chair has largely been replaced by lethal injection due to numerous botched executions and ethical concerns.
Frequently Asked Questions
Did Thomas Edison actually invent the electric chair?
No, Thomas Edison did not personally invent the electric chair, but he was instrumental in its development. He actively promoted the use of alternating current (AC) for executions as part of his campaign to discredit his rival, George Westinghouse. The actual design was created by Harold Brown and Arthur Kennelly, who worked under Edison’s direction.
Why was alternating current (AC) chosen over direct current (DC) for the electric chair?
AC was chosen because it is more lethal than DC at the same voltage. AC current causes tetanic muscle contractions, which can prevent the heart from beating properly, while DC current tends to cause a single, often survivable, shock. Thomas Edison also pushed for AC to associate Westinghouse’s technology with death.
How many people have been executed by electric chair in the United States?
Since the first execution in 1890, over 4,300 people have been executed by electric chair in the United States. The peak period was between 1900 and 1950. The last execution by electric chair as of 2026 was in Tennessee in 2020, though the method remains legal in a few states.
Is the electric chair still used today?
The electric chair is rarely used today. As of 2026, only a handful of states, including South Carolina, Tennessee, and Virginia, still have electric chairs as a legal execution method. Most states have switched to lethal injection, and the electric chair is typically only used if the condemned prisoner chooses it or if lethal injection drugs are unavailable.
Was the electric chair ever considered humane?
When it was first introduced, the electric chair was promoted as a more humane alternative to hanging, which could result in slow strangulation or decapitation. However, numerous botched executions, including the first one, revealed that the chair often caused prolonged suffering, severe burns, and gruesome injuries. Today, it is widely considered a cruel and unusual punishment.
Conclusion
The invention of the electric chair is a story of ambition, rivalry, and unintended consequences. What began as a corporate scheme to destroy a competitor ended up creating a method of execution that would be used for over a century. The key figures—Edison, Westinghouse, Southwick, Brown, and Kennelly—each played a role in shaping this device, but none could have predicted the horror it would unleash. The electric chair remains a powerful symbol of the ethical complexities surrounding capital punishment.
As we move further into the 21st century, the electric chair is fading into history. However, its legacy serves as a reminder of the dangers of allowing commercial interests to influence matters of life and death. If you are interested in the history of capital punishment, consider exploring the stories of the individuals who were executed by this device, as their experiences offer a human perspective on a deeply controversial practice. The next time you flip a light switch, remember that the same technology that powers your home was once used to take a life.
