The Hudson and Manhattan Railroad Powerhouse, also known as the Jersey City Powerhouse in Jersey City, Hudson County, New Jersey, United States, was built in 1908. The powerhouse made possible the subway system between New Jersey and New York for the Hudson and Manhattan Railroad (which became PATH in 1963). It was built under the leadership of William Gibbs McAdoo, president of the railroad. The powerhouse was closed in 1929 and used as a storage place for railroad equipment. In the 1990s, the building was cited by Preservation New Jersey as one of the state's ten most endangered historic sites. The powerhouse was added to the National Register of Historic Places on November 23, 2001, for its significance in architecture, engineering, and transportation.