Two people were wounded in the attack on the port of Taman in southern Russia's Krasnodar region, which damaged an oil storage tank, warehouse and terminals, regional Governor Veniamin Kondratyev said on Sunday.
The Ukrainian military confirmed on Sunday it had struck the Tamanneftegaz oil terminal in the Krasnodar region.
In a statement, Kyiv's General Staff said the strike on the terminal near the village of Volna had sparked a fire.
Meanwhile, falling debris from Russian drones damaged civilian and transport infrastructure in Ukraine's Odesa region, officials said, disrupting power and water supply.
Ukraine's long-range drone strikes on Russian energy sites aim to deprive Moscow of the oil export revenue it needs to pursue its full-scale invasion.
Russia wants to cripple the Ukrainian power grid, seeking to deny civilians access to heat, light and running water in what Kyiv officials say is an attempt to "weaponise winter".
The attacks came ahead of another round of US-brokered talks between envoys from Russia and Ukraine on Tuesday and Wednesday in Geneva, just before the fourth anniversary of the all-out Russian invasion of its neighbour on February 22.
Speaking at the Munich Security Conference in Germany on Saturday, Ukrainian President Volodymyr Zelenskiy suggested there were still questions over future security guarantees for his country.
Zelenskiy also questioned how the concept of a free trade zone - proposed by the US - would work in the Donbas region, which Russia insists Kyiv must give up for peace.
He said the Americans wanted peace as quickly as possible and that the US team wanted to sign all the agreements on Ukraine at the same time, whereas Ukraine wanted guarantees for the country's future security signed first.
Zelenskiy's concerns were echoed by Senator Jeanne Shaheen, a ranking member of the US Senate Foreign Relations Committee.
"Unless we have real security guarantees on whatever peace agreement is ultimately determined, we are going to be here again, because one of the things we know is that Russia has geared up not just for Ukraine, but to go beyond Ukraine," she told reporters in Munich on Sunday.
European Union foreign policy chief Kaja Kallas said Russia was hoping to win diplomatically what it had failed to achieve on the battlefield, and was banking on the US to deliver concessions at the negotiating table.
But Kallas told the Munich conference on Sunday key Russian demands - including the lifting of sanctions and unfreezing of assets - were decisions for Europe.
"If we want a sustainable peace, then we need concessions also from the Russian side," she said.
Previous US-led efforts to find consensus on ending the war, most recently two rounds of talks in Abu Dhabi, the capital of the United Arab Emirates, have failed to resolve difficult issues such as the future of Ukraine's Donbas industrial heartland that is largely occupied by Russian forces.
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