Energy: A National Issue is a 1977 American animated educational film featuring characters from The Flintstones franchise and narrated by Charlton Heston. It was produced in 1976 by Hanna-Barbera Productions for the Center for Strategic and International Studies of Georgetown University and was also the final Flintstones production to feature Alan Reed as the voice of Fred Flintstone, recorded very shortly before his death in 1977. The film was distributed to schools on 16 mm format and was also broadcast that year in many areas as a syndicated television special.