The Aether is very hot and dense, but it's energy cannot be isolated without density gradient. Try to imagine, we are living inside of hot and dense star. At the moment, everything around us is of the same temperatures, here's no way, how to excerpt such energy.

But here's a substantial energy density contained in common matter. Such energy can be released in strong gravitational field, for example by adding of stranglet during LHC experiments, but AWT proposes another ways, how to achieve the slow evaporation of matter into radiation, analogous to famous " drinking bird" toy.