Standard Power & Light Co.
San Francisco (Market Street Railway), Pittsburgh, Washington PA, Beaver Valley PA
Acquired 1925 by Standard Gas & Electric Co.
Transit operations sold 1956
Fort Smith Light & Traction Co.
Fort Smith AR
Acquired 1911 by Standard Gas & Electric Co.
Transit operations sold 1933
Southern Colorado Power Co.
Pueblo
Acquired 1911 by Standard Gas & Electric Co.
Transit operations sold 1949
Northern States Power Co.
St. Cloud MN, Fargo ND, Eau Claire WI, Chippewa Falls WI, Ottumwa IA
Acquired 1911 by Standard Gas & Electric Co.
Transit operations sold 1939
Wisconsin Public Service Co.
Green Bay
Acquired 1925 by Standard Gas & Electric Co.
Became separate new company 1952/Transit operations sold 1974
Wisconsin Valley Electric Co.
Wausau
Acquired 1927 by Standard Gas & Electric Co.
Transit operations sold 1951