Electric Light, Domestic

Electric Tube Company

This company was incorporated on March 4, 1881, to manufacture underground conductors for central stations. It was absorbed by the Edison Machine Works around December 31, 1885.

General Electric Company

This company was incorporated on April 15, 1892, in a merger of the Edison General Electric Company and the Thomson-Houston Electric Company.

Sprague Electric Railway and Motor Company

This company was acquired by the Edison General Electric Company in 1889.

Thomas A. Edison Central Station Construction Department

This company was formed in May 1883 to construct direct-current electric power stations in towns and cities throughout the United States. It was responsible for the construction of thirteen central stations in Massachusetts, New York, Ohio, and Pennsylvania. On September 1, 1884, the construction department was absorbed by the Edison Company for Isolated Lighting, which assumed responsibility for the construction of all central stations in the United States.