Bulgaria's energy system is functioning normally at present, Nikolov said in a statement published by the energy ministry on Tuesday.
However, Russia's aggression against Ukraine poses additional risks to Europe's energy security against the background of already high prices from energy suppliers, he added.
Bulgaria relies almost entirely on Russian gas imports to meet its domestic needs.
Nikolov stressed the need to coordinate EU countries' contingency actions, with a focus on guaranteeing energy resilience and availability to both households and businesses, including through providing European financing that would support national budgets.
Close co-operation is needed with Greece on accelerating energy connectivity in the region, including the reverse link with Serbia, the minister said. He also noted Bulgaria's support for the speedy integration of the Ukrainian electricity system into the European one.
The Greece-Bulgaria gas interconnector is scheduled to begin commercial operations in July.