Kozloduy (Bulgarian: Козлодуй) is a town of 13 771 inhabitants in northwest Bulgaria, located in Vratsa Province, on the river Danube. The city was liberated from Ottoman rule on 23 November 1877 by the Romanian Army under the command of the Imperial Russian Army. Kozloduy is best known for the Kozloduy Nuclear Power Plant, Bulgaria's only (as of January 2011) nuclear power plant, which is situated nearby, as well as the second largest Bulgarian Danubian island, Kozloduy Island.