+1 energy regeneration bonus?

[Chris5900]

What does this do exactly? Does it increase the regeneration to 4 instead of three?

[Gambit12]

Yup, you answered your own question. You got it right...

[HunterKiller]

I am guessing it does not stack with other energy bonuses?

[Golf4life]

why do you say that

[Biff05]

I am guessing it does not stack with other energy bonuses?

It should. For example Iran, you should still get a reduced time and an additional +1 unit would be added to this unit making it +2 every minute for a total of 5 units of energy every hour.