"Energy" is a word with definite physical meaning. I don't know what Freud said or wrote about mental or psychic 'energy'. I only know what you wrote your post. Let's just put all that libido and conscious and unconscious energy into one big brain, yours for instance. Your brain according to physics has two types of energy. There's the kinetic energy in how fast your brain is moving at a given time. And there's the potential energy in how high above grade your brain is. The brain delivers its energy in the form of work done as its velocity goes from 'v' to '0'. An in the heat or work done when it is dropped to the floor. We would further have to look at how hight it bounced (eleastic collision) or if it went splat (inelastic collision).
As for conscious versus unconscious, my own theory is that the allegory of the human mind is an iceberg. The unconscious part is the iceberg below water level, and the roughly ten percent above the waterline is the conscious part, essentially dragged along with limited capacity to direct things, but always willing to make excuses. Every so often, the part below waterline loses mass on one side and the entire thing does a flip. Then new excuses emerge. These are called theories, revolutions, and explanations.
When two icebergs meet, they have what is called a 'frank exchange of views'.