Russia has fired a barrage of missiles at targets across Ukraine for the eighth time in eight weeks, reports BBC.
In the south, Odesa was without power and significant disruption to the power grid was reported in the east Ukraine as an outcome of previous missile attack.
But the eighth-strikes, which came nearly two weeks after the last, may have done less damage than on previous occasions.
Ukraine says it shot down 60 of the 70 missiles fired by Russia.
However, Moscow says it hit all 17 of its targets.
In his video address late on Monday, Ukrainian President Volodymyr Zelensky said the strikes had also hit electricity supplies in neighbouring Moldova.
"This once again proves that Russia's ability to carry out such massive terrorist attacks is a threat not only to Ukraine, but also to our entire region."
Previous Russian attacks have hit Ukraine's energy grid, leaving millions without electricity and heat as winter arrives.
Three servicemen were killed and two aircraft were lightly damaged in the explosions, Russia's defense ministry said. Ukraine has yet to comment.
For Ukraine's hard-pressed electrical engineers, Monday's missile strikes are likely to mean another round of emergency repairs, often to facilities hit repeatedly in recent weeks.
Before today's strikes, officials in Kyiv were talking about moving from highly disruptive emergency blackouts, which often last for many hours, to more manageable scheduled power cuts which offer civilians some badly needed predictability.
Bd-pratidin English/Lutful Hoque
