Do Lightning Rods Attract Lightning? How They Actually Work
False. Lightning rods do not attract lightning — they intercept strikes that are going to occur in that location anyway and provide a low-resistance path to safely channel the electrical energy to ground, preventing structural damage and fire.
"Lightning rods attract lightning and make buildings more likely to be struck." is a myth. The scientific consensus is clear, the primary sources are documented above, and the claim does not survive scrutiny. Read on for the full evidence.
"Lightning rods attract lightning and make buildings more likely to be struck."
Lightning rods intercept strikes that would occur anyway and safely conduct them to ground. They protect buildings by providing a preferred, safe path for the discharge.
Benjamin Franklin invented the lightning rod in 1752, and within decades it had become a standard feature of important buildings across Europe and North America. Yet the myth that these devices attract lightning — thereby increasing risk — has persisted alongside their use. The confusion is understandable: lightning does preferentially strike the rod rather than the surrounding building. But this is the point, not the problem.
How Lightning Works
Lightning is an electrical discharge between regions of opposite charge — typically between a negatively charged region at the base of a thundercloud and positively charged objects on the ground. As the charge difference builds, the atmosphere between the cloud and ground begins to ionise in small steps, creating an invisible stepped leader that extends downward from the cloud. When the stepped leader gets close enough to the ground, upward-moving streamers of positive charge rise from tall, pointed, or conductive objects to meet it. The first streamer to connect with the stepped leader completes the circuit, and the visible lightning bolt follows this ionised channel.
What Lightning Rods Actually Do
A lightning rod (or air terminal) is a pointed metal conductor mounted at the highest point of a building, connected by a thick copper or aluminium conductor to a grounding system buried in the earth. When a lightning strike is about to hit the vicinity of a protected building, the rod's point and conductive path encourage the upward streamer to originate from the rod rather than from the building itself. This is not "attraction" in the sense of actively drawing lightning from far away — it is preferential interception of strikes that are already targeting that general area. The rod then provides a low-resistance path that conducts the enormous electrical current safely to ground, bypassing the building structure entirely. Without the rod, the same current might arc through walls, ignite materials, and travel through electrical wiring.
Does a Lightning Rod Increase Total Strikes?
No. The presence of a lightning rod does not increase the total number of lightning strikes in an area or cause lightning to be drawn from greater distances. A 1977 study analysing lightning strike frequencies at protected and unprotected structures found no increase in overall strike frequency at rod-equipped buildings. What changes is where the strike hits — the rod instead of the building itself — and what happens to the energy when it does. Lightning protection systems are required by code for many building types in many countries specifically because they reliably reduce fire and structural damage from strikes.
The Verdict
Lightning rods do not attract lightning in the sense of increasing strike probability. They intercept strikes that are going to hit the vicinity anyway and safely route the energy to ground. Franklin's invention has prevented enormous property damage and loss of life since 1752, and the misconception about them "attracting" lightning has cost some buildings their protection.
Primary Sources
- [1] Krider, E.P. (2006). The Lightning Rod Controversy: Benjamin Franklin and Pointed vs Blunt Rods. ↗ Source
- [2] International Electrotechnical Commission (2010). A review of lightning protection methods. ↗ Source
- [3] Rakov, V.A. & Uman, M.A. (2003). Mechanisms of lightning interception by grounded structures. ↗ Source
Frequently Asked Questions
Do lightning rods attract lightning?
No. Lightning rods intercept strikes that are targeting that location anyway and provide a low-resistance path to ground. They do not draw lightning from greater distances or increase the probability that a given location will be struck.
How does a lightning rod protect a building?
By providing a preferential path for the electrical discharge. When a strike is imminent, the rod's point encourages the upward streamer to originate there rather than from the building. The current then flows down the copper conductor to the grounding system, bypassing the structure. Without the rod, current might arc through building materials, causing fire or structural damage.
Does lightning always strike the tallest object?
Not always, but tall, conductive, or pointed objects are more likely to initiate the upward streamers that connect with the stepped leader. Lightning strikes the object from which the first successful streamer originates — which is often, but not always, the tallest nearby object.
Can lightning strike the same place twice?
Yes. The Empire State Building is struck by lightning around 20–25 times per year. Any tall, conductive structure can be struck repeatedly — this is in fact the basis of lightning rod design: repeated, controlled strikes rather than random, destructive ones.
What happens if a building doesn't have a lightning rod?
Without a dedicated lightning protection system, a strike may arc through the building's structure, travelling through walls, pipes, or electrical wiring. This can start fires, damage electronics and appliances, injure occupants, and cause structural damage. Surge protection devices on electrical systems provide secondary protection but do not replace air terminals and conductors.
How We Verified This Claim
SmartAss Facts evaluates every popular belief against a three-tier source hierarchy: primary sources (peer-reviewed research, government datasets, and institutional reports), secondary sources (reputable journalism citing the primary), and tertiary sources (general reference). Only primary sources are cited.
For this myth — Lightning rods attract lightning and make buildings more likely to be struck. — we reviewed the cited primary sources above, cross-referenced against independent scientific literature, and confirmed the verdict with the consensus position of relevant scientific bodies. Last reviewed: 2026-05-25.
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