The Zaporizhzhia Nuclear Power Station (, ) in southeastern Ukraine is the largest nuclear power plant in Europe and among the 10 largest in the world. It is under the control of Russia since 2022. It was built by the Soviet Union near the city of Enerhodar, on the southern shore of the Kakhovka Reservoir on the Dnieper river. It is operated by Energoatom, who also operate Ukraine's other three nuclear power stations. The plant has six VVER-1000 pressurized light water nuclear reactors (PWR), each fuelled with U (LEU) and generating 950 MWe, for a total power output of 5,700 MWe. The first five were successively brought online between 1985 and 1989, and the sixth was added in 1995. The plant generates nearly half of the country's electricity derived from nuclear power, and more than a fifth of total electricity generated in Ukraine. The Zaporizhzhia thermal power station is nearby. On 4 March 2022, the nuclear and thermal power stations were both captured by Russian forces during the Battle of Enerhodar of the 2022 Russian invasion of Ukraine. the plant is reportedly controlled by the Russian company Rosatom. The plant continued to be operated by Ukrainian staff, under Russian control, until 11 September 2022, when the sixth reactor was disconnected. Facilities The spent nuclear fuel is stored in cooling pools inside the reactor containments for up to five years. It is then transferred to an on-site dry cask storage facility that was commissioned in 2004. The reactors and spent fuel pools depend on water from the Kakhovka Reservoir for cooling. The reservoir is created by the Kakhovka Hydroelectric Power Plant dam, which is a main conflict location of the two war participants. The electricity generated is supplied to the Ukrainian grid through four 750kV overhead transmission lines and one 330kV line. One of the 750kV lines runs northwards across the Kakhovka Reservoir and on to the Dniprovska substation just south of Vilnohirsk in Dnipropetrovsk Oblast. The other three 750kV lines run south from the plant, first splitting off at the village of Zapovitne to the Kakhovska substation just west of Nova Kakhovka. This is the newest of the lines and was commissioned in 2021. Two lines continue south-southeast, splitting off at the urban-type settlement of Mykhailivka with one line continuing southeast to the Pivdennodonbaska mines in Donetsk Oblast, and the other continuing east and then north to the Zaporizka substation