Zelensky warns Ukraine's heating and power system has almost no thermal plants left for winter

On Aug. 8, 2026, in Belgrade, President Volodymyr Zelensky warned that Ukraine has been left with "virtually no intact thermal power plants" after Russian strikes as it prepares for winter. He spoke hours after an overnight barrage of 6 ballistic missiles and 151 drones killed four people in Kyiv and the surrounding region — including a 3-year-old boy and his grandparents — and 13 nationwide in 24 hours when frontline shelling is included.

How much power Ukraine can still generate versus what a cold winter needs. Waterfall of Ukraine's available dispatchable generation capacity (IEA basis) from a pre-war ~38 GW down through the mid-2024 low (~12 GW), a partial restoration to ~17.6 GW before winter 2025–26, and a post-winter 2026 collapse to under 10 GW. Even with the 2.1 GW EU winter import cap, domestic supply plus imports (~12 GW) still falls short of cold-winter peak demand of about 18 GW. Figures are reported/estimated GW of usable capacity, not the pre-war ~56 GW of installed plant. — AI-assisted analytic, built only from real cited or sourced data. Source: Towarzystwo Ekonomistw Polskich (TEP), Brookings Institution, International Energy Agency. As of 2026-08-08.

The warning is political as well as technical: whether Ukraine can keep heat and lights on this winter affects millions of civilians, its ability to keep factories and railways running, and what Europe will be asked to supply in air defences, power links, gas and money. Serbia's pledge in Belgrade — €2m for the energy sector — shows how far symbolic help is from the gap. And whether "virtually no intact" is a literal engineering count remains uncertain: no plant-by-plant audit by Ukraine's grid operator Ukrenergo, its largest private energy company DTEK, or the International Energy Agency after the Aug. 7-8 strikes has been published.

Zelensky was on his first official visit to Serbia since becoming president in 2019, meeting President Aleksandar Vucic at the Palace of Serbia. He said "Russian missiles are aimed precisely at making the lives of Ukrainians unbearable," and that strikes systematically target energy infrastructure.

What hit Kyiv overnight

The overnight attack was a combined package launched from the evening of Aug. 7, according to Ukraine's Air Force on its Telegram channel @kpszsu, as relayed by Ukrainian outlets. Russia fired 6 Iskander-M ballistic missiles and S-400 surface-to-air missiles adapted for ground attack from the Bryansk region, plus 151 drones — Shahed-type attack drones including jet-powered models and Gerbera, Italmas and Parodiya decoys — from Kursk, Oryol, Millerovo, Primorsko-Akhtarsk and occupied Crimea and Donetsk.

By 09:00 on Aug. 8, air defences had shot down or suppressed 135 of the 151 drones over the north, south and east, the Air Force said. Missile impacts and 13 attack drones were recorded at 12 locations, with debris at seven. Several missiles failed to reach their targets and the attack was still ongoing at the time of the report. The figures come via secondary relays of the Telegram post, not a directly read primary post, and have not been independently audited.

The pattern matters more than the tally. Drones were largely intercepted; ballistic missiles were not. The Air Force reported intercepting only 29 of 195 ballistic missiles in July — about 15% — and on Aug. 5 none of 24 ballistic and four hypersonic missiles were intercepted, according to the Kyiv Independent and other relays. That gap is why generation and transmission can now be hit.

The civilian cost was concentrated in Pukhivka, a village in Brovary district east of Kyiv. Five drones destroyed a two-storey home at about 00:40, killing a grandmother, grandfather and their 3-year-old grandson and hospitalising the child's parents, his 15-year-old brother and a 21-year-old neighbour who was wounded in a double-tap strike while coming to help, according to Zelensky and local authorities. In Kyiv city, one person was killed and four injured, with fires in garages and storage covering about 1,000 sq m in the Holosiivskyi district and at an enterprise in Obolonskyi.

Zelensky's figure of 13 dead in 24 hours adds frontline shelling beyond the four in Kyiv and Kyiv region. No detailed breakdown by oblast beyond that has been published, and no Russian Defence Ministry statement on the Aug. 7-8 targets was located.

How the system got this empty

Ukraine's electricity and heating system ahead of winter is the plain subject here — not just power lines, but the plants that make heat and electricity when it is needed.

A thermal power plant, in Ukraine's case, burns coal or gas to make electricity and, in combined heat-and-power plants, district heat for cities. Ukraine had 15 such large plants. Dispatchable capacity — the electricity that can be turned on when needed from thermal, hydro and nuclear plants — is the number that matters for keeping lights and heat on, as opposed to nameplate installed capacity. A gigawatt is about enough to power roughly 750,000 homes at once; Ukraine needs about 18 GW on the coldest days.

Before 2022, that dispatchable capacity was about 38 GW, according to the International Energy Agency. A separate measure of total installed capacity was about 56 GW — the two should not be conflated. Losses in the first year of war from occupation, destruction and damage took about 19 GW. After concentrated attacks in spring 2024, functional capacity fell to about 12 GW, roughly a third of pre-war.

Repairs lifted it again: about 3 to 3.5 GW of thermal, combined heat-and-power and hydro was restored, and the Energy Ministry anticipated about 17.6 GW available ahead of winter 2025-26. Winter strikes then knocked it back below 10 GW, while demand in a cold winter can reach 18 GW — 16.5 GW in the mild winter of 2024-25, 18 GW the year before. That trajectory is an extrapolation from before the Aug. 7-8 barrage; no post-attack IEA update has been located.

The components tell the same story. About 90% of thermal generation was destroyed as of May 2025 — 80% as of September 2024 — and about 50% of hydropower installations were damaged and 40% destroyed as of May 2025. Nuclear, from three plants totalling 7.7 GW, now provides about half of electricity generation and is the backbone, but Russia has increasingly destroyed the expensive transmission that links those plants to consumers rather than the plants themselves, effectively isolating them. The 6-GW Zaporizhzhia plant, which supplied about a quarter of pre-war power, remains under Russian occupation.

The grid itself is split. Ukrenergo, the state transmission operator that balances supply and demand and manages rolling blackouts — planned rotating outages when demand exceeds supply — has to move power from a better-supplied west to a deficit east near the front. That split means totals alone mislead.

Zelensky's phrase "virtually no intact thermal power plants" was reported verbatim by France 24, Al Jazeera and Turkiye Today from the Belgrade press conference. It is an attributed warning, not an engineering audit. The context supports it — by March 2026 syntheses all 15 thermal plants were described as damaged or destroyed and thermal's share of generation had fallen from 23.5% to about 5% — but no Ukrenergo or DTEK plant-by-plant list has been published, for security reasons.

Why Russia now hits generation, not just the grid

Where Ukraine's remaining power sits and why it struggles to reach the east. Locator map of Ukraine's wartime power geography: operating nuclear plants (7.7 GW at Rivne, Khmelnytskyi, and South Ukraine) and EU interconnector entry points sit in the west, while major demand centers Kharkiv, Dnipro, and Zaporizhzhia lie farther east — and the 6 GW Zaporizhzhia plant remains occupied and offline. Winter imports are capped at about 2.1 GW, so western generation and imports cannot fully cover eastern demand when transmission is severed. Frontline is schematic only (not a control map). — AI-assisted analytic, built only from real cited or sourced data. Source: Towarzystwo Ekonomistw Polskich (TEP), Brookings Institution, International Energy Agency. As of 2026-08-08.

The campaign has changed in phases, which is why the warning is now plausible.

In 2022-23, strikes targeted grids and substations for short, repairable blackouts, on an assumption of a quick victory that would leave generation intact. In 2024, after that assumption was abandoned, Russia systematically destroyed thermal and hydro generation itself — 9 GW lost between March and May 2024 alone. In 2025-26, it has concentrated massive missile and drone salvos on single locations to overwhelm local air defences, trigger city-wide collapses in Dnipro, Zaporizhzhia, Kharkiv and Kyiv, sever nuclear-plant transmission, and expand to gas production and storage and district heating. By the end of 2024 at least 18 combined heat-and-power plants, more than 800 boiler houses and 354 km of heating pipes had been hit.

Scale is the mechanism. About 2,000 missiles and drones were used in the first two years; in September 2025 alone Russia deployed almost 6,900 drones, according to IEA and Polish think-tank syntheses. The Trypilska thermal plant, destroyed in spring 2024, rebuilt, was severely damaged again on Sept. 7-8, 2025; on Oct. 10, 2025, strikes left 800,000 residents in Kyiv without power. The Aug. 7-8 barrage fits that pattern: ballistic-heavy, infrastructure-focused, timed ahead of the heating season.

This doctrine is inferred from pattern and independent analysis, not from a published Russian doctrine document.

Three ways to read intent — and what the law says

Intent is the most contested link. Civilian harm is documented; purpose is not.

The humanitarian-leverage reading, advanced by Ukraine, the IEA, Brookings and the Polish TEP analysis, holds that strikes deliberately target energy to make civilian life unbearable in winter and maximise political pressure. Timing ahead of heating season and city-wide collapses are cited as evidence. The UN human rights office OHCHR, in a report covering Dec. 1, 2025 to May 31, 2026, documented at least 423 Russian attacks on electricity generation, transmission and distribution and at least 74 strikes on centralised heating between October 2025 and March 2026, often as large coordinated salvos. It found hundreds of thousands without heating during Ukraine's coldest winter since 2010 and concluded generation capacity cannot be fully restored by next winter. OHCHR recorded 1,272 civilians killed and 6,871 injured in that period, up 40% year on year, with long-range missile and drone attacks the leading cause. The UN aid office OCHA, in a January-February 2026 snapshot, reported nearly daily energy attacks leaving hundreds of thousands without electricity, heating and water sometimes for weeks at -20C across 17 oblasts and Kyiv, 352 killed and 1,523 injured in two months, and nearly 2 million children losing an average 16.5 learning days.

The Russian Defence Ministry reading, relayed by AP and NPR in July 2026 and in a November 2025 formulation, frames large-scale strikes as retaliatory for Ukrainian long-range strikes on Russian civilian infrastructure and as aimed at military-industrial enterprises and fuel and energy complexes supporting Ukrainian operations, including airfields, using high-precision weapons. Energy is hit, in this framing, because it powers the war effort. The claim is attributed, not verified, and no Aug. 8 targeting statement was located.

The independent coercion/attrition reading, from the Center for Strategic and International Studies Futures Lab analysis of oblast-level damage reports from 2023 to early 2026, describes a "geography of coercion" combining denial — disrupting logistics nodes, energy, ports, rail and air defence — and punishment. Scaling is driven by Shahed-type drone mass production, from about 250 a month in October 2022 to 5,000-6,000 a month in late 2025, to cheaply probe defences, force Ukraine to expend costly interceptors, force dispersion of defences and widen the area that must be protected. Damage has concentrated in frontline and southern industrial oblasts and major urban centres; western oblasts are hit less often due to distance from launch areas and better layered air defence. The effect, CSIS finds, is cumulative rather than decisive: damage-days rose from 358 in 2023 to 1,553 in 2025, yet without breaking political cohesion or forcing rapid settlement.

The legal lens is separate from intent. International humanitarian law has no formal "dual-use" category: under Additional Protocol I article 52, an object is either a military objective — making an effective contribution to military action where its destruction offers a definite military advantage — or a civilian object. Energy infrastructure may be assessed as a military objective case by case, but proportionality and feasible precautions still apply and reverberating civilian harm must be counted. Strikes on Ukrainian electrical infrastructure form the basis for International Criminal Court arrest warrants against three senior Russian military officials and a defence minister for directing attacks against civilian objects and causing excessive incidental harm, according to the Lieber Institute. Even where a military objective exists, an attack may still be unlawful if a purpose is to terrorise civilians; the Yugoslav tribunal in the Galić case held that apparently disproportionate or indiscriminate patterns can give rise to an inference that civilians were the object of attack. OHCHR also documented a reciprocal strike — Ukrainian authorities attacking a power plant in Russia's Belgorod region causing temporary outages — underscoring that the same rules apply symmetrically.

What an 8-gigawatt hole means this winter

If domestic capacity stays below 10 GW and demand hits 18 GW, the arithmetic is stark: even with the maximum 2.1 GW that can be imported from the EU in winter — 1.7 GW in summer — after synchronisation in March 2022, about 8 GW remains uncovered. That shortfall would mean prolonged rolling blackouts affecting heat, water, transport, health care, telecoms and schooling. Last winter Kyiv saw 14-16 hours a day without power; the UN found the burden falls hardest on older people, women, low-income families and displaced people, with 90 verified attacks on health care in early 2026 alone.

The 2.1 GW figure is a technical cap recalculated weekly by six regional transmission operators, not delivered energy, and congestion plus the frontline split limits how much can reach the deficit east. Gas is the second bottleneck: after 40% of production was lost in early 2025, attacks on Oct. 3-4 and Oct. 16, 2025 on Kharkiv and Poltava knocked about 60% of production offline. Ukraine had injected about 13 billion cubic metres into storage by mid-October 2025 toward a 13.2 bcm target, importing via Hungary, Poland and Slovakia and about 400 million cubic metres of US liquefied natural gas (LNG) — gas cooled to liquid for shipping — via Lithuania and Poland, but may need at least an additional 4.4 bcm before March 2026 if attacks continue, costing about $2.5bn.

Decentralised generation — small 5-40 MW gas turbines, about 1,500 MW of rooftop solar with batteries by early 2024, DTEK's 200 MW/400 MWh storage complex across six sites capable of powering 600,000 homes for two hours, and more than 700 MW of wind in development — is now mainstream and helps keep critical sites running, but not at a scale to close an 8 GW gap. Money is the other gap: restoring generation damaged over winter 2025-26 is estimated at about $1bn plus $600-800m for physical protection and $160-180m for gas repairs, financed so far by a €500m loan from the EBRD, the European Bank for Reconstruction and Development, a multilateral development bank, and €300m from the EIB, the European Investment Bank, the EU's long-term lending arm, plus €83m from Norway and €62m from Oschadbank. The World Bank's Rapid Damage and Needs Assessment (RDNA) — its regular estimate of war damage and recovery costs — put energy recovery needs at $67.78bn and total war recovery at $587.7bn, with energy assets up about 21% damaged since December 2024.

Why he said it in Belgrade

The venue explains the politics, not the physics.

Serbia condemned the 2022 invasion and backs Ukraine's territorial integrity, including territories seized since 2014, and its EU bid, but remains one of few European states not sanctioning Russia and depends on Russian gas. Vucic said Serbia's policy had not changed: "We did not discuss any military cooperation today or at present. What will happen when the war ends is another matter." Both leaders said no military cooperation was discussed. Serbia is diversifying its military, replacing Soviet MiG-29s with French Rafales, and Vucic has denied Kremlin claims that Serbian firms sell munitions to Ukraine via intermediaries.

What was actually signed was modest. The leaders pledged to finalise a free-trade agreement by the end of 2026 — talks stalled for more than 20 years, blocked since 2005 over Ukrainian agricultural quotas and tariffs, and a prerequisite for Serbia's accession to the World Trade Organization (WTO), the body that sets global trade rules, and relevant to EU membership. Serbia pledged €2m for Ukraine's energy sector plus a humanitarian package focused on medical and energy sectors and help rebuilding cities. The countries signed a memorandum on animal health and food safety between Serbia's Agriculture Minister Dragan Glamocic and Ukraine's ambassador Oleksandr Lytvynenko, and Zelensky discussed Danube Corridor logistics linking Ukraine, the Western Balkans and the EU with Prime Minister Duro Macut.

Vucic was candid about limits: EU enlargement is "not just a merit-based process," he said, and "I'm very afraid that we're in for a very difficult winter — especially for Ukrainians." The €2m and the FTA pledge are signals of a balancing act, not a rescue for a system that needs billions and, above all, interceptors and intact transmission to survive the cold.