My game has a red bow behind the lightning bolt where the energy bar is. What does that mean?

I had that this morning too and don’t know what I did to get it but it looks like instead of powering up one unit every 2 minutes, you power up one unit every minute. So basically you’re getting twice the energy.

I had the same thing and don’t know why. Seemed to last a couple hours so far.

I have the same thing occurring today, and believe the calculation of double the energy per minute seems true.

Thank you, to whomever gave us this gift!