Which company started life running streetcars in the early 1900's and now operates hydroelectric dams?
Lake Tugalo:  It is the fifth lake in a six-lake series created by hydroelectric dams operated by Georgia Power that follows the original course of the Tallulah River. Georgia Power:  It was established as the Georgia Railway and Power Company and began operations in 1902 running streetcars in Atlanta as a successor to the Atlanta Consolidated Street Railway Company.
Georgia Power