plant was about to be revoked. The company formally protested in January 2008. On April 17, 2008 the FERC found that construction at the Marseilles Hydro Plant had not begun in a timely manner per the Federal Power Act and terminated the license for the project. Architecture The main generator building at the Marseilles Hydro Plant is cast in the Classical Revival architectural style. The station was designed under the lead of consulting and design engineer Humphrey, who had his office at The Rookery in Chicago. The rectangular generator building is immediately adjacent the Illinois River and is about long by wide; it stands tall. Outbuildings In addition to the main generator house there are several outbuildings and other structures on the site of the Marseilles Hydro Plant. The plant's forebay is an pool edged with concrete retaining walls. The storehouse, a building known as the "Barn", was constructed c. 1913 and has dimensions of about . The Oil House or "Oil Shed" is a windowless structure approximately in size. The overgrown site of the coal-fired steam plant is another area on the property, though only the foundations remain. The dates of the steam plant's construction and demolition are uncertain. Two other structures, a substation shed and the substation switchgear and transformers, are on site; both date from 1956. Historic significance The Marseilles Hydro Power Station played a major role in modernizing the Illinois River Valley by providing electricity for the state's first electric trains. In addition, the site of the coal-fired steam plant has the potential to yield archaeological information about the history of power generation in the United States. The Marseilles Hydro Plant was listed on the U.S. National Register of Historic Places on May 9, 1989. The listing included four of the six outbuildings, structures and sites as contributing properties; only the structures dating from 1956 were excluded. References External links Energy infrastructure completed in 1911 Archaeological sites on the National Register of Historic Places in Illinois Buildings and structures in LaSalle County, Illinois Former hydroelectric power plants in the United States Historic American Engineering Record in Illinois Hydroelectric power plants in Illinois Illinois River National Register of Historic Places in LaSalle County, Illinois Industrial buildings and structures on the National Register of Historic Places in Illinois 1911 establishments in Illinois Energy infrastructure on the National Register of Historic Places Former power stations in Illinois