New Delhi, Jan. 15 -- Emergency repair crews are working flat out to restore power in the Kyiv region of Ukraine, officials said Wednesday, after relentless Russian barrages on energy infrastructure left Ukrainians at the mercy of the coldest winter in years.

At Boryspil, a town in the Kyiv region with a population of around 60,000, workers dismantled and rebuilt burned-out electrical systems as they rushed to fix the damage.

They work in the snow amid temperatures of -15 C (13 degrees F) from early morning till midnight, Yurii Bryzh, who leads the Boryspil regional department of private electricity provider DTEK, told The Associated Press.

They have managed to restore the supply for four hours a day. But Bryzh said the problem was "wh...