Don't worry, there's a reason the energy bar is side-lined the way that it is. Almost every ship function in the TC runs off energy. Artillery weapons, impellers, special defenses; you name it. However, to counter this, every ship has immense power generation abilities. The Alexander carries 1600 units of fuel, but it can regenerate the entire supply in about a minute. Each firing of its Nichron "Annihilator" artillery batteries uses up 400 units of fuel, but they hit extremely hard. Attempting to volley more than four shots though, will find the player struggling to sustain an acceptable rate of fire, forcing them to fall back on chemical systems, like missiles, or low-power defensive weapons, at least until the main reactors can recharge. It means that although the heavier weapons in the game pack a gigantic punch, they can't truly be fired indefinitely with abandon. No typical "spray of bullets" like I would always do with blaster fire in Nova. You really have to think strategically, and make every shot count. It also means that ships of smaller classes, the largest holding 300 units of fuel, can't be forced to accept the use of artillery weaponry normally reserved for massive battleships, even through the use of mass expansion and whatnot. All ships have fuel regeneration though, and many have multi-jump engines, so for regular travel, you won't need to even worry about watching the energy bar.
Basically, the energy bar is there simply because most people will want to see if they have power to fire, more than if they have power to jump. If almost any portion of the bar is white, then you know you can fire the big guns. It doesn't have to be large and precise, because if you can fire the guns, then you also know you can jump out of the system if needs be. I also positioned it where it is, because you'll notice it is conveniently located right below the secondary weapon indicator, so you can check with lightning speed which big gun you have selected, and if you have the power to fire it. I may still tweak things a little (the sidebar is still a 27.3 MB photoshop file with more than forty layers) and go for a horizontal energy bar beneath the weapon indicator, but once again I have to ask if its really necessary when it recharges so quickly.