High Quality Content by WIKIPEDIA articles! The Kozloduy Nuclear Power Plant is a nuclear power plant in Bulgaria situated 200 kilometres (120 mi) north of Sofia and 5 kilometres (3.1 mi) east of Kozloduy, a town on the Danube river, near the border with Romania. It is the country`s only nuclear power plant and the largest in the region. The construction of the first reactor began on 6 April 1970.