When you first open the energy log page you will see a display with "You have achieved xxx steps today". After tapping the center display, you will see another display with "You have generated xxx + ooo in energy today."

This number breaks down as follows:

Before the + sign: energy produced from walking or running throughout the day.

After the + sign: any energy bonus you've received because of the spaceship you're using, added to any energy gained from using the booster system!