With Bob's mods (and I imagine with a fair few others) there are situations where you can reasonably produce power as a byproduct of a process that generates something else, or produce something else as a byproduct of a process that produces power. A classic example would be using electrolysis to separate oxygen and hydrogen out of pure water, then using the oxygen in a recipe and burning the excess hydrogen in a fluid-burning generator to produce energy. Because of this added complexity, it would be nice to be able to use Helmod's ability to calculate power production in tandem with its ability to link blocks and "subtract out" recipes - that is, to be able to solve for power and products at the same time. As a basic example, one might wish to take a red science goal and use Helmod to calculate the total amount of coal required not just for furnaces but also for steam power for assemblers, and call that a production line with water as the input and red science as the output (where mining of coal, iron, and copper, production of power, and smelting and assembly of the resources are all handled as linked blocks that reveal the number of machines required).
