“It worked. Chicago’s manufacturers flocked to Chicago Edison, which Insull soon renamed the Commonwealth Edison Company. In 1908, a reporter for Electrical World and Engineer noted that “although isolated plants are still numerous in Chicago, they were never so hard pressed by central station service as now…. The Commonwealth Edison Company has among its customers establishments formerly run by some of the largest isolated plants in the city.” A year later, the Electrical Review and Western Electrician wrote that Insull’s customers “now included a large number of great manufacturing and industrial plants.” As more manufacturers joined the system, Insull continued to push down prices. Per-capita sales of electricity skyrocketed in Chicago, rising from about 10 kilowatt-hours in 1899 to nearly 450 kilowatt-hours by 1915.”
―
Nicholas Carr,
The Big Switch: Rewiring the World, from Edison to Google