No because this would ruin the point of energy. If this existed, people would just have super high regen but low cap and just spam this button when they're drained, allowing them to use their weapons and reduce the damage of energy weapons because they're not drained. And energy weapons usually have the lowest damage out of all elements, so this button would basically kill energy, especially drainers. This works for heat because heat weapons usually do more damage than energy, and heat is all about shutting opponents down while energy is about crippling them than dealing heavy damage to them when drained. Plus when you're drained you can still do something. When you're shutdown you can't. Energy should never be compared to heat as they are completely different, albeit with some superficial similarities.