Russia Presses Winter Energy Campaign as Its Forces Suffer Record September Losses

Russia entered October facing a paradox of its own making: its military is absorbing its heaviest casualties of the year while simultaneously escalating a deliberate campaign to plunge Ukraine into a cold, dark winter. According to figures released by the Ukrainian military, Moscow lost 46,230 soldiers killed or wounded in September alone — the highest monthly total of 2026 and a sharp rise from the roughly 40,000 casualties per month recorded since June.

The September toll brings Russia closer to a benchmark set by Ukrainian President Volodymyr Zelenskyy in January, when he argued that inflicting 50,000 Russian casualties per month would be necessary to break the Kremlin's will to continue the war. The month also produced a single-day record: Russia reportedly lost 2,090 troops on September 28, the highest 24-hour casualty figure of the entire conflict. Al Jazeera cannot independently verify casualty claims made by either side, though Ukraine asserts it possesses video evidence for each loss, noting that more than 90 percent of them result from first-person-view drone strikes.

Despite these mounting losses, Moscow continues to push for the remaining portions of Ukraine's eastern Luhansk and Donetsk regions that remain outside its control — the very areas where the fighting has been most lethal. The intensity of the combat there helps explain why Russian casualty rates have climbed so steeply even as its territorial gains remain marginal.

Ukraine's Third Army Corps has been responsible for some of the heaviest Russian losses, particularly around the town of Lyman. In recent weeks, the third phase of a Ukrainian counteroffensive known as Operation Vivaldi has reclaimed 176 square kilometers (68 square miles) of territory in the area, according to the corps. Its commander, Brigadier General Andriy Biletsky, said the operation succeeded by staging a feint from the west that drew Russian forces into costly counterattacks, then striking from the north while Moscow's reserves were exhausted.

Among the tactics employed by Ukrainian forces was the use of remotely operated Russian armored personnel carriers packed with explosives and driven into Russian defensive positions. A Ukrainian commander on the Lyman front described how Vivaldi's first phase wiped out a Russian vanguard, while Ukrainian drone operators worked to sever ammunition and fuel supplies to the front lines. Russia's defense ministry denied Ukraine's gains, publishing video it presented as evidence — a claim that independent monitors have generally not corroborated.

That gap between claim and reality has become a recurring feature of the war. The Institute for the Study of War and the open-source tracking group DeepState, which map territorial changes using geolocated footage, have estimated Russia's net gains this year at just 148 square kilometers (57 square miles) — a fraction of the 5,300 square kilometers Moscow claims to have captured. The disparity underscores how little ground Russia has secured relative to the enormous human cost it has incurred.

Yet Russia's inability to advance rapidly on the ground has not prevented it from intensifying its air campaign against Ukrainian cities. Over the past week, Russian strikes hit energy infrastructure along with residential buildings, kindergartens, schools, and office blocks. On September 28, a drone partially destroyed a building belonging to Ukraine's National Academy of Sciences in Kyiv, killing several people.

Two days later, Russian drones struck a thermal power plant in the Kyiv region, causing power outages across the capital. At least five people were killed elsewhere in the country that day. Prime Minister Sergii Koretskyi said on social media that while Russia has attacked energy infrastructure nearly every day since the summer, the scale and combination of the latest assault had not been seen since the end of the previous heating season.

Zelenskyy has spent weeks warning that Moscow intends to batter Ukraine's power grid in order to inflict maximum suffering during the winter months. The concern is not only about heating and electricity but about the broader erosion of civilian morale as temperatures drop.

The methods Russia is deploying appear to be evolving. On September 30, Ukraine's defense ministry electronics adviser, Serhii Beskrestnov, said Russia tested a drone equipped with a cumulative cutting warhead designed specifically to sever high-voltage pylons — a sign, he argued, that Moscow's intent is to cripple critical power transmission lines. Russia also targeted data centers during September, in what Ukrainian officials viewed as an attempt to disrupt internet connectivity and digital commerce.

Ukraine's ability to defend against these attacks is constrained by a shortage of interceptors capable of stopping ballistic missiles. Several missiles penetrated Ukrainian air defenses on September 30, according to Zelenskyy, who has argued that Ukraine could manufacture interceptors faster and more cheaply than its allies if the relevant technology were shared. He had previously persuaded US President Donald Trump to permit licensed production of Patriot system interceptors at last July's NATO summit, but Trump later withdrew the offer — a reversal that left Kyiv without a key element of its long-term air defense strategy.

A newer challenge has emerged in the form of jet-powered drones, which are far harder to intercept than the propeller-driven models Ukraine had grown adept at destroying. During the week ending October 1, Ukrainian forces downed only 81 percent of the 1,933 long-range aerial drones Russia launched, a decline attributable to the growing share of jet-powered models in Russia's arsenal. Zelenskyy said Ukraine's interception rate for jet-powered Shahed drones now stands at just 55 percent.

Beskrestnov further warned that Russia is developing a radio beacon system to improve drone guidance, which could make future attacks more precise and harder to defend against. Taken together, the evidence suggests Moscow is betting that a sustained campaign against Ukraine's energy grid and air defenses — even as its ground forces bleed heavily in the east — can achieve what its battlefield offensives have not.