Ukraine says it can now resume exports of surplus electricity as its energy infrastructure has mostly recovered from months of Russian strikes.

Russia began repeated attacks on Ukraine's energy infrastructure last October, severing the supply of electricity and heat during the winter.

But Ukraine's energy minister announced on social media on Saturday that his country's energy facilities have recovered with the help of international partners to the extent that it can now export excess electricity.

He explained that Ukraine decided to resume electricity exports to nearby countries to secure additional financial resources for the full restoration of power infrastructure while prioritizing supply to domestic consumers.

Ukraine's state-run power firm Ukrenergo said on the same day that Russian forces have used more than 1,200 missiles and drones to attack key energy facilities nationwide over the last six months.

The company said about 250 of them hit targets, damaging 43 percent of the main networks. But it said most of the damaged networks have been repaired.

The utility added that Ukraine has prevented Russia's attempt to take away light and heat during the six coldest months of the year.

The British defense ministry said in its intelligence update on Saturday that "Russia's campaign to severely degrade Ukraine's unified energy system within the 2022-23 winter has highly likely failed."

The Institute for the Study of War, a US think tank, also said on Saturday that "Russia appears to have abandoned the effort" to degrade Ukraine's energy system.