Secretary of Energy (1977–1978) Minister of Energy (1978–1986) President
Ferdinand Marcos issued Presidential Decree No. 1397 on June 2, 1978, converting all departments into ministries headed by ministers.
Minister of Environment, Energy, and Natural Resources (1987) President
Corazon Aquino issued Executive Order No. 131 on January 30, 1987, merging the Ministry of Energy with the Ministry of Natural Resources to create the Ministry of Environment, Energy, and Natural Resources.
Secretary of Environment, Energy, and Natural Resources (1987) President
Corazon Aquino issued Administrative Order No. 15 on February 11, 1987, converting all ministries into departments headed by secretaries.
Secretary of Energy (from 1992) == Notes ==