The Weston, High Park and Toronto Street Railway Company was incorporated in 1890, and changed its name to the City and Suburban Electric Railway Company the next year. The Davenport Street Railway Company was incorporated in 1891. In 1894, the Toronto Suburban Street Railway Company was incorporated and acquired these two companies, giving it of lines in the northwestern suburbs of Toronto. In 1900, the company name was shortened to Toronto Suburban Railway Company, and in 1904 it was authorized to extend its operations to Hamilton, the Niagara Peninsula, Brampton, Guelph and Woodbridge. The Township of Etobicoke also granted the TSR a franchise to cover the full length of Dundas Street within its limits, west of the Humber River. Expansion plans were hampered because of the shortness of capital and labour, as well as by potential takeover interest by the Hydro-Electric Power Commission of Ontario, but it did convert its power source from internally generated 500V DC from its own plant, to high-voltage AC power from Niagara Falls.