Why is the alternator output read "low"?

I ran an auto electrical shop for a few years. Other than older Audis and VWs, alternator output was 14.5 volts on average at idle.
On my '17 I read 13.7 volts at the alternator output stud. I have verified the same voltage with two other 3rd Gen tacos.
No starting problems, just curious why Toyota did this.

 

Not sure, but what did you do to your rotor?

 

Tried to eat a valve.

 

I believe they are pulse width modulated so they will only charge what is needed when it is needed.

 

If you turn your headlights on does the alternator stay at the lower voltage or does it step up. Whats the voltage right after starting from a cold motor. I'm sure the lower voltage is trying to get better gains in mileage.

 

Don't know about Toyota, but some manufacturers only charge on deceleration and other low load conditions to improve fuel economy.

 

That picture hurts my brain. Me: questions everything I know about rotary engines