On April 5, Ukrainian drones attacked critical infrastructure facilities near Donetsk. According to local authorities and Russian media, «graphite bombs» were used during the strike, leading to power line short circuits. We explain what these munitions are.
Graphite bomb and its contents. Screenshot from video: exilenova_plus / Telegram
A graphite bomb is a special munition designed to disable electrical networks without direct physical destruction of objects. Its main element consists of very thin, conductive fibers made from carbon materials.
After being dropped, the munition opens in the air. Inside is a container with spools of graphite fiber and a small explosive charge. When detonated, this charge does not create a powerful shockwave, but instead ruptures the container and disperses the fibers as a cloud over the target.
These fibers are extremely thin — their thickness can be just a few micrometers. They are lightweight and can be carried by the wind, covering a significant area.
When the fibers land on elements of the power system — wires, insulators, transformers — they create conductive «bridges» between parts with different voltages. This leads to a short circuit.
In high-voltage networks, the process develops further: the current instantly heats the fiber, it vaporizes, and around it, a channel of ionized gas forms, which also conducts current. As a result, the short circuit intensifies, and protection systems either disconnect the line or an emergency failure occurs.
Why Graphite Munitions Are Effective
The main feature of such weapons is that they do not physically destroy the object but disable it.
As a result:
- electricity disappears without direct destruction of stations;
- transport, communications, and water supply are disrupted;
- entire urban systems can shut down.
Graphite conducts electricity well and is very lightweight, so even a relatively small number of fibers can cause large-scale outages.
Restoring the power system after such an attack can take from several days to several weeks. However, the power plants and equipment themselves usually remain undamaged — the problem is that the system cannot operate stably due to constant short circuits.
Illustrative image. Source: vecteezy.com
Limitations of Graphite Munitions
The effectiveness of graphite munitions heavily depends on weather conditions. Rain can wash away the fibers, and strong winds can disperse them beyond the target area. This makes the outcome less predictable compared to traditional strikes.
Additionally, such weapons only affect electrical systems. If an object has autonomous power sources or well-protected backup infrastructure, the effect may be limited.
One method of counteraction is the temporary shutdown of power lines, electrical and traction substations for the duration of the munition's effect — until the graphite particles settle on the ground. This reduces the risk of short circuits and equipment damage.
Design and Use of Graphite Munitions
The most well-known instances of such weapons being used are related to US military operations in Iraq and Yugoslavia at the end of the 20th century. At that time, strikes on power systems caused large-scale electricity outages without completely destroying infrastructure.
Classic «graphite bombs» have a cluster structure. For example, the American BLU-114/B system contains hundreds of submunitions, each of which disperses fibers over the target.
Graphite bomb BLU-114/B. Photo: Wikimedia Commons
Initially, such munitions were created as aerial weapons. However, with technological advancements, they have become compatible with other delivery methods. Today, graphite charges can be used not only from aircraft or missiles but also from drones, making them a more flexible tool for striking infrastructure.
Modern developments are making these munitions more precise and effective, including against protected targets. Experts predict that in the future, new generations of such devices may emerge, including systems with selective action elements, where fibers are activated only upon contact with specific types of equipment.
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