What is the importance of Zaporizhzhya, Ukraine's nuclear plant targeted by Russia?

Built between 1984 and 1995, Ukraine’s Zaporizhzhya is the largest nuclear power plant in Europe and the ninth-largest in the world. It has six reactors, each of them generating 950 MW and a total power output of 5,700 MW, which is enough energy for around four million houses. It's located about 200 km from Crimea, which Russia annexed in 2014.