Built between 1917 and 1921, Queenston-Chippewa was, for many years, the largest Hydro-electric project in the world. Its design was a marvel of engineering and imagination. As many as 10,000 people were employed, and the estimated costs, in 1921, were $131,000,000. It was the vision of Sir Adam Beck, Chairman of the newly formed Hydro-Electric Power Commission of Ontario, that there should be affordable power for the growing population and industrial base of Ontario. The Niagara Generating Stations that bear his name are the anchors of the Queenston Chippewa development.