Please check the following image. The different colors in the booster system's graph represent the different multiples of energy you've generated:
* Green means you generated 2x (double) energy with the booster on
* Orange means you generated 3x (triple) energy with the booster on
* Red means you generated 4x (quadruple) energy with the booster on
* Green means you generated 2x (double) energy with the booster on
* Orange means you generated 3x (triple) energy with the booster on
* Red means you generated 4x (quadruple) energy with the booster on