Energy is the process of motion from a state of order to a state of less order, and vice versa. Two states exist, ordered and disordered, and any one state can spontaneously switch to the other (though thermodynmaics holds that it's a one way order-disorder, and only the addition of energy can create more order again). When the spontaenous exchange of states occurs, we describe the medium as energy. Energy exists only as a PROCESS. It is not the cause of a process, nor is it restrained to some form of particle or whatnot... it is a PROCESS.
Note- this holds pretty well with an Information Theory metaphysics. Matter is data. Energy is algorithms (aka PROCESSES?), and algorithms are in return, their own kind of data. E is proportional to M, as purported by Einstien.
w00t. Who says I'm not a genius?
Oh yeah... no one.