I would not agree that energy is what exists as the original and absolute cause of the world, considering the fact that energy – by its definition – is reduced to the ability to perform work, and being such, energy cannot cause anything. The cause can be that which stands behind the energy, i.e. that which has the ability to perform the work, which we sensorially observe as energy only when that which exists bestirs itself and starts to perform work. Being as such, it exists as the original with the role of the cause, and energy is something that appears from it later on by its exertion, or movement i.e. through work while possessing the meaning of second, which is the meaning of consequence.
In other words, work, of any kind, alone by itself has no meaning of existence. The meaning of existence is possessed by that which has the ability to perform that work. In that sense, for example, we can say that running as an action and an act of energy does not exist, but it is the runner who runs who exists; that thought does not exist, but rather the thinker who thinks; that music does not exist, but instead the musician who plays it; that information (knowledge) does not exist but rather the one who knows; that gravity does not exist, but rather the one able to gravitate does; that heat/coldness does not exist, but only the one who is able to heat/cool; that good/evil does not exist, but instead the one who has the ability to feel good/evil and so on and so forth.