SOUTHEASTERN POWER & LIGHT CO.
Incorporated 1924. In 1929 consolidated into Commonwealth & Southern Corp.
Alabama Power Co.
Anniston, Gadsden, Huntsville, Montgomery, Sheffield, Tuscaloosa
Acquired 1924 by Southeastern Power & Light Co.
Transit operations discontinued 1947
Gulf Power Co.
Pensacola FL
Acquired 1924 by Southeastern Power & Light Co. from Stone & Webster
Transit operations discontinued 1934
Georgia Power Co.
Atlanta, Athens, Augusta, Columbus, Macon, Rome
Acquired 1926 by Southeastern Power & Light Co. from United Gas Improvement Co.
Transit operations discontinued 1961
Mississippi Power Co.
Gulfport/Biloxi, Hattiesburg, Laurel, Meridian
Acquired 1924 by Southeastern Power & Light Co.
Transit operations discontinued 1938
South Carolina Power Co.
Charleston
Acquired 1926 by Southeastern Power & Light Co. from United Gas Improvement Co.
Sold to South Carolina Electric & Gas Co. 1948
In 1948, South Carolina Power Co. was sold to South Carolina Electric & Gas Co. And in 1949, the remaining Southeastern companies resumed independence as Southern Co.
COMMONWEALTH POWER CORP.
Incorporated 1922 as subsidiary of Commonwealth Power Railway & Light Co., incorporated 1910. In 1929 consolidated into Commonwealth & Southern Corp.
Illinois Power Co.
Springfield
Acquired 1909 by Union Railway Gas & Electric Co.
Transit operations transferred 1933 to Transportation Securities Corp. subsidiary
Southern Indiana Gas & Electric Co.
Evansville
Acquired 1909 by Union Railway Gas & Electric Co.
Transit operations sold 1948
Tennessee Electric Power Co.
Chattanooga, Nashville
Acquired 1925 by Commonwealth Power Co.
Transit operations sold 1941
The electric utility in Springfield eventually became municipally owned, while Southern Indiana Gas & Electric Co. became an independent company. And the Tennessee Electric Power Co. was dissolved, as most electric utilities in Tennessee were taken over by the Tennessee Valley Authority.
PENN-OHIO EDISON CO.
Incorporated 1923. In 1929 consolidated into Commonwealth & Southern Corp.
Northern Ohio Power & Light Co.
Akron, Canton, Massilion, interurban lines
Acquired 1928 by Penn-Ohio Edison Co.
Transit operations transferred 1930 to Transportation Securities Corp. subsidiary
Pennsylvania-Ohio Electric Co.
Warren, Youngstown, New Castle PA, Sharon PA, interurban lines
Acquired 1923 by Penn-Ohio Edison Co.
Transit operations transferred 1930 to Transportation Securities Corp. subsidiary
Transportation Securities Corp.
Formed 1930 as subsidiary to hold various Commonwealth & Southern Corp. transportation companies.
Akron, Canton, Massilion, Youngstown, New Castle PA, Sharon PA, Athens GA, Columbus GA, Springfield IL, Gulfport/Biloxi MS
Transit operations sold 1943
Under Commonwealth & Southern Corp., Penn-Ohio Edison Co. became known as Ohio Edison Co., with Pennsylvania Power Co. as a separate subsidiary. Ohio Edison Co. eventually became part of FirstEnergy Corp., including various utilities in Ohio and Pennsylvania.
UNION RAILWAY GAS & ELECTRIC CO.
Incorporated 1909, acquired 1913 by Commonwealth Power Railway & Light Co. Originally included the operations in Springfield and Evansville. In 1924, became a subsidiary of newly formed Electric Railway Securities Co., with less affiliation to Commonwealth Power Co. At that time, the Springfield and Evansville operations became direct subsidiaries of Commonwealth Power Co., while the five operations in Michigan were transferred to Union Railway Gas & Electric Co.
Rockford & Interurban Railway Co.
Rockford, IL
Acquired 1911 by Union Railway Gas & Electric Co.
Transit operations sold 1926
De Kalb Sycamore & Interurban Traction Co.
Interurban (IL)
Acquired 1913 by Union Railway Gas & Electric Co.
Passenger service discontinued 1924
Janesville Traction Co.
Janesville, WI
Acquired 1913 by Union Railway Gas & Electric Co.
Transit operations sold 1926
Grand Rapids Railroad Co.
Grand Rapids MI
Acquired 1910 by Commonwealth Power Railway & Light Co.
Transit operations sold 1930
Michigan Electric Railway Co.
Battle Creek, Jackson, Kalamazoo, Lansing, Owosso/Corunna, interurban lines
Acquired 1913 by Commonwealth Power Railway & Light Co.
Transit operations sold 1930
Michigan Railroad Co.
Bay City
Acquired 1910 by Commonwealth Power Railway & Light Co.
Transit operations sold 1928
Saginaw Transit Co.
Saginaw MI
Acquired 1910 by Commonwealth Power Railway & Light Co.
Transit operations sold 1931
Grand Rapids Holland & Chicago Railway Co.
Holland MI
Acquired 1913 by Commonwealth Power Railway & Light Co.
Transit operations sold 1924