OK, this isn’t so much esoteric energy as esoteric propulsion, but some of its proponents claim that it can be harnessed as an energy source, although I have my doubts owing to scalability that it can beat FF, from what very little I can understand about what they are getting at.
Here’s the link, I was hoping someone with a better understanding of Physics could explain just what the hell Jim Woodward is talking about. Something to do with the nature of momentum and Mach’s effect allowing the creation of Momentum ex nihilo (or something like it) and the warping of Space Time.
http://www.woodwardeffect.com/