Hydro-Electric Railways, a subsidiary of the Hydro-Electric Power Commission of Ontario (HEPC or HEPCO), was an operator of radial railways in the province of Ontario, Canada. Its parent agency, the Hydro-Electric Power Commission of Ontario, would later evolve into Ontario Hydro and, later, Hydro One.
The Ontario Legislative Assembly granted the commission authority to operate electric interurban railways in the territory served by the commission in the Hydro-Electric Railway Act, 1914.[1] Changes in government policy and public sentiment in the 1920s restricted their development, and all such operations ceased in the 1930s (with the exception of the Hamilton Street Railway streetcar system, which continued until 1946).[2][page needed]