Commissioner
— 1920
Acting Commissioner
— 1921–1923
Commissioner
— 1924–1926
Commissioner
— 1928–1930
Commissioner and Chairman
— 1931–1932
Chairman
— 1933–1945
General Manager
— 1946
General Manager
— 1947–1961
Chairman
— 1948–1961
Chairman and General Manager
— 1952–1956
Chairman, President and General Manager
— 1957–1961
Chairman
— 1962–1967
General Manager
— 1962–1967
Chairman and General Manager
— 1968–1969
General Manager
— 1970–1971
Chairman - 1970–1972
Chairman
— 1973
General Manager
— 1973
Chairman and Chief Executive Officer
— 1974–1978
Vice-Chairman
— 1979
Vice-Chairman
— 1980
Chairman
— 1981
President and Chief Executive Officer
— 1980–1982
Chairman
— 1982–1984
President and Chief Executive Officer
— 1983–1986
Chairman
— 1984–1988
President and Chief Executive Officer
— 1986–1990
Chairman
— 1988–1990
Chairman
— 1991–2000
President and Chief Executive Officer
— 1990 to present
Chairman
— 2000 to present
City Power Manager
— 1911–1912
General Manager
— 1912–1944
General Manager
— 1944–1951
General Manager
— 1952–1955
General Manager
— 1955–1960
General Manager
— 1960–1969
General Manager
— 1969–1978
General Manager
— 1978–1988
General Manager
— 1988–2000
Acting General Manager
— 2000
Acting General Manager
— 2000
Director
— 2001 to 2002