In the form of Plutonium? Perhaps. In the form of U-238? Perhaps too, but look near enrichment plants and you will see yards full of steel cylinders filled wit

In the form of Plutonium? Perhaps. In the form of U-238? Perhaps too, but look near enrichment plants and you will see yards full of steel cylinders filled with depleted Uranium hexafluoride. https://www.google.co.uk/maps/@53.2635448,-2.9592278,327m/data=!3m1!1e3?entry=ttu https://www.google.co.uk/maps/@53.2635448,-2.9592278,327m/da... So the spent fuel does not contain valuable energy. Better off removing the requirement to be able to retrieve it and just get on with disposing of it.