John Marshall Harlan II,
Federal Power Commission v. Sunray Dx Oil Company…
“ The Court there held that when a permanent certificate, containing no refund condition, is held on judicial review to have embodied too high an in-line price, the Commission may on remand condition the new permanent certificate to require refund of the excessive charges received under the old. If the producer expectations created by a permanent certificate may thus be overridden by the public interest, then the surely lesser reliance induced by an 'unconditioned' temporary certificate issued on the producer's own representations should not bar a later refund requirement. ”
