New Target Emerges in Russia’s Attacks on Ukraine’s Grid: Nuclear Facilities

Russia hit critical electricity transmission facilities linked to nuclear power plants during its latest assault on Ukraine’s power grid on Thursday, the International Atomic Energy Agency reported. It was the third such attack in roughly as many months, heightening concerns among experts about the potential for a nuclear disaster.

The agency said that the Russian strikes had hit electrical substations crucial for Ukraine’s three operational nuclear plants to transmit and receive power. While no direct damage to reactors was reported, all of them reduced output as a precautionary measure and one was disconnected from the grid.

“Ukraine’s energy infrastructure is extremely fragile and vulnerable, putting nuclear safety at great risk,” Rafael Mariano Grossi, the head of the agency, the I.A.E.A., said in a statement released late Thursday.

Russia has targeted Ukraine’s energy infrastructure since the war’s first winter two years ago, in an effort to collapse its grid and make life miserable for its citizens. For most of that time, attacks focused on thermal and hydroelectric plants, along with their transmission facilities, causing widespread blackouts across the country.

Still, Ukraine’s grid did not collapse, mainly because much of its power generation relies on nuclear plants, which had been largely spared from air assaults.

Russia’s strategy of destroying substations connected to nuclear power plants is newer and appears intended to collapse Ukraine’s last major power generation capacity, experts say. The attacks against the substations began in late August, the I.A.E.A. reported.