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Defence & Security19 Oct 2026 · about 6 min

Russia Hits 28 Substations in Overnight Strike, Zelensky Says

The brief

Russia damaged 28 substations across Ukraine overnight, along with other important energy facilities. The strikes reached regions from east to west, including western Ukraine. This matters because substations help move electricity through the national grid, so damage can interrupt service well beyond the immediate blast site. President Volodymyr Zelensky said repairs were ongoing everywhere. Earlier, he had reported damage to more than 10 energy infrastructure facilities, but later gave the higher figure of 28 substations and other critical sites. The attack also left more than 550,000 households without power. Repair crews are gradually restoring electricity. Ukrainian officials have warned that Russia wants to cripple the energy system this winter and pressure Kyiv into capitulation. The article also says planned attacks could affect electricity generation, heating, water supplies, sewage systems, and connections used to import energy from Europe.

01

What happened to Ukraine’s energy infrastructure in the overnight attack?

Russia damaged 28 substations across Ukraine overnight, along with other important energy facilities. The strikes reached regions from east to west, including western Ukraine. This matters because substations help move electricity through the national grid, so damage can interrupt service well beyond the immediate blast site.

President Volodymyr Zelensky said repairs were ongoing everywhere. Earlier, he had reported damage to more than 10 energy infrastructure facilities, but later gave the higher figure of 28 substations and other critical sites. The attack also left more than 550,000 households without power.

Repair crews are gradually restoring electricity. Ukrainian officials have warned that Russia wants to cripple the energy system this winter and pressure Kyiv into capitulation. The article also says planned attacks could affect electricity generation, heating, water supplies, sewage systems, and connections used to import energy from Europe.

02

How large was the attack, and how many people were affected by the resulting blackouts?

The attack was exceptionally large by the figures reported in the article. At least 16 Russian ballistic missiles and 269 drones were launched across Ukraine. Together, those figures show a broad, coordinated assault rather than a strike on one isolated facility.

The attacks targeted 11 Ukrainian regions, stretching from east to west. They damaged substations and other energy infrastructure, causing blackouts for over 550,000 households nationwide. The affected households were not necessarily all located beside the facilities that were directly hit, because grid disruptions can spread through connected networks.

The article does not give a precise number of individual people affected. It measures the impact in households. Electricity was being restored as repair crews worked, but officials warned that further attacks could threaten heating, water, sewage, and energy imports during winter.

03

What is an electrical substation, and what does it do in a power grid?

An electrical substation is a facility where electricity is switched, controlled, protected, and often transformed between voltage levels. Power usually travels long distances at high voltage, then moves toward towns and neighborhoods at lower voltages. Substations help make those transitions safely and efficiently.

A substation may contain transformers, circuit breakers, switches, and protection equipment. Transformers raise or lower voltage, while breakers and switches direct power or isolate damaged sections. This lets operators keep electricity flowing through healthy routes and protect equipment when faults occur.

The article reports that 28 substations were damaged in Ukraine’s overnight attack. It does not describe each site’s equipment or exact function. However, damage to substations can disrupt power delivery even when generators remain intact, because electricity still needs functioning grid connections before it reaches homes and businesses.

04

Why can damage to substations cause blackouts far beyond the sites that were directly hit?

Substations are not isolated power sources. They are junctions that connect high-voltage transmission lines with other grid sections and local distribution networks. If a key substation is damaged, electricity may have no working route into the surrounding area, even when generators elsewhere continue operating.

The disruption can spread through automatic protection systems. When equipment detects a fault, circuit breakers may disconnect lines to prevent fires, overloads, or damage to other grid components. Operators may then need to reroute power, balance supply and demand, and inspect equipment before reconnecting it.

That mechanism helps explain why the attack caused blackouts for more than 550,000 households, not only for customers beside the struck sites. Ukraine’s repair crews are restoring service, but repeated damage could reduce the number of available routes and make the grid harder to stabilize.

05

Why are electricity, heating, water, and sewage systems especially important targets during winter?

During winter, people depend heavily on energy systems to stay warm, keep water flowing, and maintain safe living conditions. Electricity powers heating equipment, pumps, communications, and essential services. Water and sewage systems also need energy to operate, so outages can create several problems at once.

The article reports that Russia’s alleged plans include attacks on electricity generation, heating, water supply, sewage systems, and facilities that enable energy imports from Europe. Leaked documents reportedly suggest cutting electricity and heating supplies to some cities by 90 percent and severely disrupting sewer operations. Locals told Kyiv Post that water disruptions were among their main winter concerns.

Ukrainian officials say Russia may be trying to cripple the energy grid and force Kyiv into capitulation. Zelensky said preparations for the heating season were underway. Continued attacks could therefore worsen blackouts, threaten heating, and make repairs more urgent as temperatures fall.

06

How can Ukraine restore power after an attack, and what alternatives exist if domestic energy facilities or connections to Europe are damaged?

After an attack, restoration normally begins with making damaged equipment safe, repairing or replacing components, and reconnecting functioning parts of the grid. Operators can also reroute electricity through available lines and balance demand with supply. The article says Ukrainian repair crews are already working and that electricity is gradually being restored.

If major domestic facilities are unavailable, Ukraine may rely on backup generators, emergency equipment, reduced consumption, and temporary local power systems. If connections to Europe are damaged, imported electricity may be harder to obtain. Other routes, spare equipment, and repairs can help, but they cannot instantly replace a large transmission link.

The article says Russia also plans to target facilities that allow Ukraine to import energy from Europe. It does not specify Ukraine’s full backup capacity. That makes protecting repair crews, preserving alternative routes, and preparing infrastructure important as winter approaches and further strikes remain a concern.

07

How does a modern power grid move electricity from generators to homes, and why does it depend on many connected facilities working together?

Electricity usually begins at a generating facility, such as a power plant. Transformers raise its voltage for long-distance transmission, allowing power to travel through major lines. Substations then switch and transform it again before distribution networks carry it through local lines to homes, businesses, and public services.

Every stage depends on the next. Generators must produce enough electricity, transmission lines must carry it, substations must control and transform it, and local networks must deliver it. Protection systems also have to detect faults and isolate damaged equipment. A failure at one important junction can force other parts offline or overload remaining routes.

The overnight attack showed this interdependence. Damage to 28 substations and other facilities caused blackouts affecting more than 550,000 households. Ukraine is repairing the network, but officials warn that attacks on generation, heating, water, sewage, and European interconnections could create wider and longer disruptions.

This brief was written by AI from the original reporting and checked by other models. Names, figures and quotes come from the source; read it for full context.

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