The fonds consists of minutes (1909-1948), annual reports, agreements to provide service, legal agreements, lists of properties and assets, financial records, income tax returns, shareholders' records, construction records, and scripts for radio broadcasts sponsored by the company. Includes films, photographs and slides of power plant, dam and transmission line construction (1910-1962), and employee outings. Also includes Calgary Water Power Co. minutes (1890-1934), incorporation ordinance and bylaws, correspondence, agreements, annual reports, and financial records; and financial records of Montreal Engineering Co., Saskatchewan office, and Prairie Power Co., Regina. Also includes drawings relating to the automation of plants and dams.