Sociedad Deportiva Ponferradina B is a Spanish football team based in Ponferrada, in the El Bierzo region, León, in the autonomous community of Castile and León. Founded in 1963 as Club de Fútbol Endesa de Ponferrada, it is the reserve team of SD Ponferradina and currently plays in Tercera Federación – Group 8, holding home games at Estadio Compostilla, which holds 6,000 spectators.