CPS Energy former Board of Trustees since 1942
| First Name | Last Name | Term Start | Term End |
| Franz C. | Groos | 10/24/1942 | 8/4/1947 |
| Walter | Napier | 10/24/1942 | 2/1/1951 |
| W. B. | Tuttle | 10/24/1942 | 11/29/1948 |
| D.F. | Youngblood | 10/24/1942 | 12/31/1949 |
| J.H. | Frost | 8/6/1947 | 9/26/1950 |
| Willard E. | Simpson | 11/29/1948 | 1/31/1960 |
| Gen. John M. | Bennett, Jr. | 1/6/1950 | 1/31/1964 |
| J. H. (James) | Calvert | 10/10/1950 | 1/31/1962 |
| Melrose | Holmgreen | 2/1/1951 | 9/26/1962 |
| Leroy G. | Denman, Jr. | 2/1/1960 | 1/31/1970 |
| Albert | Steves, III | 2/1/1962 | 3/15/1969 |
| Charles | George | 11/26/1962 | 1/25/1965 |
| John R. | Locke | 2/1/1964 | 1/31/1974 |
| John H. | Morse | 1/25/1965 | 1/31/1973 |
| John | Gatti | 6/19/1969 | 4/30/1971 |
| Eloy | Centeno | 2/1/1970 | 1/31/1980 |
| John E. | Newman | 5/24/1971 | 5/29/1974 |
| Thomas | Berg | 2/1/1973 | 1/31/1978 |
| Dr. Robert V. | West, Jr. | 2/1/1974 | 1/23/1976 |
| Glenn | Biggs | 6/3/1974 | 1/26/1987 |
| Ruben | Escobedo | 8/1/1977 | 1/31/1989 |
| Earl C. | Hill | 3/8/1978 | 1/31/1988 |
| Lila | Cockrell | 6/29/1981 | 5/31/1989 |
| Pat | Legan | 4/27/1987 | 5/31/1997 |
| Dr. Frank. | Bryant, Jr. | 2/1/1988 | 2/23/1998 |
| Al | Aleman | 3/27/1989 | 1/31/1994 |
| Gloria Leal | Hernandez | 5/31/1989 | 5/31/2001 |
| Arthur Rojas | Emerson | 2/1/1994 | 2/22/1999 |
| Nelson W. | Wolff | 4/1/1997 | 5/31/2001 |
| Clayton T. | Gay, Jr. | 2/1/1998 | 1/31/2008 |
| Alvaro | Sanchez, Jr. | 2/1/1999 | 1/31/2009 |
| Cheryl | Garcia | 6/1/2001 | 3/31/2002 |
| Stephen | Hennigan | 6/1/2001 | 1/31/2011 |
| Aurora | Ortega-Geis | 4/1/2002 | 1/11/2010 |
| Derrick | Howard | 2/1/2008 | 1/31/2018 |
| Dr. Homer | Guevara | 3/2/2009 | 1/31/2019 |
| Charles | Foster | 1/11/2010 | 1/31/2011 |
| Nora | Chavez | 2/1/2011 | 1/31/2016 |
| Edward | Kelley | 5/19/2011 | 1/31/2022 |
The Mayor of San Antonio serves as an ex-officio member.
| First Name | Last Name | Term Start | Term End |
| C.K. | Quin | 6/1/1941 | 1/8/1943 |
| Gus B. | Mauerman | 1/8/1943 | 5/31/1947 |
| Alfred | Callaghan | 6/1/1947 | 5/31/1949 |
| A.C. (Jack) | White | 6/1/1949 | 3/1/1952 |
| Sam Bell | Steves | 3/6/1952 | 4/30/1953 |
| A.C. (Jack) | White | 5/1/1953 | 9/9/1954 |
| R. L. | Lester | 9/9/1954 | 10/20/1954 |
| R.N. | White Sr. | 10/21/1954 | 4/30/1955 |
| J. Edwin | Kuykendall | 5/1/1955 | 4/30/1961 |
| W. W. | McAllister, Sr. | 5/1/1961 | 4/30/1971 |
| John | Gatti | 5/1/1971 | 4/30/1973 |
| Charles L. | Becker | 5/1/1973 | 4/30/1975 |
| Lila | Cockrell | 5/1/1975 | 4/30/1981 |
| Henry | Cisneros | 5/1/1981 | 5/31/1989 |
| Lila | Cockrell | 6/1/1989 | 5/31/1991 |
| Nelson W. | Wolff | 6/1/1991 | 5/31/1995 |
| William | Thorton | 6/1/1995 | 5/31/1997 |
| Howard | Peak | 6/1/1997 | 5/31/2001 |
| Ed | Garza | 6/1/2001 | 6/17/2005 |
| Phil | Hardberger | 6/17/2005 | 5/31/2009 |
| Julian | Castro | 6/1/2009 | 7/22/2014 |
| Ivy | Taylor | 7/22/2014 | 6/21/2017 |
Note: Term Start is when Trustee first attended a regularly scheduled Board meeting
