E-flat clarinet
"Alternative Energy" is scored for electronica and orchestra, comprising three flutes (2nd doubling alto flute, all doubling piccolo), three oboes (3rd doubling English horn), three clarinets (2nd doubling E-flat clarinet), three bassoons (3rd doubling contrabassoon), four French horns, three trumpets, two trombones, bass trombone, tuba, three percussionists, harp, piano, and strings.