The verified development came on the morning of 26 August 2024, when Russia launched over 200 missiles and drones at Ukraine in one of the largest air attacks of the war, aimed chiefly at the power system. Around 8 million households lost electricity without warning, and Kyiv saw its first unscheduled blackout since November 2022. The record shows why the sector is a battleground: energy is both a target and a measure of whether the state survives the winter.
What the strikes have destroyed
According to the International Energy Agency, Russian forces have hit the grid regularly since the 2022 invasion and intensified from the spring of 2024. Across 2022 and 2023 roughly half of Ukraine’s generating capacity was occupied, destroyed or damaged, along with about half of the large network substations. The seizure of the Zaporizhzhia nuclear plant alone removed 6 GW of capacity, and a wave of strikes between March and May 2024 took away another 9 GW, mainly thermal and hydro units. What remained was around one-third of the pre-war fleet. Heat infrastructure fared no better: by May 2024, 18 large combined heat and power plants had been damaged or destroyed, together with 815 boiler houses, 152 central heating points, 354 kilometres of heating pipe; the Kyiv School of Economics prices that damage at USD 2.4 billion. Losses to the power industry alone passed USD 11.4 billion, with rebuilding estimated near USD 30 billion.
The winter problem in numbers
Even before cold weather arrived, supply fell short. In summer 2024, the IEA reports, generation ran 2.3 GW below a peak demand of 12 GW despite imports from western neighbours, forcing the operator Ukrenergo into rolling cuts that left the worst-hit regions with only a few hours of power a day. Across June and July the supply-demand gap ranged from 0.8 to 2.3 GW. Households bought diesel generators and power banks; industrial consumption has halved since 2022, and residential demand is down 20%, partly because 6.5 million refugees left the country. An EU-backed switch from incandescent bulbs to LEDs alone trimmed demand by as much as 1 GW.
Adaptation is now policy. The government pushed decentralised generation early, favouring small gas turbines of 5 to 40 MW plus rooftop solar with batteries on hospitals, schools and homes; consumers had installed almost 1 500 MW of solar panels by the start of 2024. Integration with Europe carries much of the load. Ukraine cut itself loose from the Russian and Belarusian grids on the very day of the invasion, for a planned test of “isolated mode” operation; an emergency synchronisation with continental Europe, planned in months, was finished in weeks, and the import limit now stands at 1.7 GW.
Why Moscow strikes the grid
The strategic context, as Brookings analysts Maciej Zaniewicz and Danylo Moiseienko set it out in October 2025, runs deeper than the battlefield. Most of the system was built in Soviet times, jointly with Russian engineers, deliberately oversized with redundancy against a future war; Russian planners know its every node. The aim of the strikes, they write, was to break civilian morale and collapse the economy that funds the army. The irony is that the very bloat designed for a Soviet war, plus sweeping Western equipment deliveries, kept the network standing.
The gas file tells the same story of severance. Ukraine stopped buying directly from Gazprom in 2015 and won more than $2.5 billion in Stockholm arbitration over the 2009 contracts; it swapped Russian nuclear fuel rods for Westinghouse ones. The transit pipeline that once earned Kyiv between $1 billion and $1.7 billion a year, moving gas through a network rated at 140 bcm, ran dry when the Russian transit deal expired at the end of 2024. Officials confirmed the direction of travel years ago: integration with Europe, decoupling from Russia, at whatever cost the strikes impose. Winter, each year, is the audit.
Sources
- Ukraine’s energy system under attack – Ukraine's Energy Security and the Coming Winter – IEA
- Ukraine's energy sector is a key battleground in the war with Russia | Brookings
