Best place to live for good quality power

@jaytor Thanks for sharing your data.    I too have a PS Audio power plant and enjoy the built in oscilloscope.  I've checked my data occasionally over several years and it is always around 4.2% THD.  voltage can vary from 114 to 123.  I set the output to 119.5 and get .1% thd.   Here is a link to the chopped sine waves of my input (same as I posted above).  

https://photos.app.goo.gl/5scsFGHBRjE8ewti9

California electrical grid is not the best managed.  Of course, except for audiophile equipment, nobody really cares.  Your hair dryer or stove will not notice the difference.

Jerry

@carlsbad2 - I live less than 1/2 mi from our electrical substation which may help explain the more consistent voltage and lower THD. I don't think there are any manufacturing operations (which tend to operate large motors) very close to me. I don't think I've ever seen the voltage less than 119 or more than 120.5, so it stays pretty consistent. 

I also have solar panels with an inverter connected to the grid. Not sure if that helps or hurts. 

I have my power plant set for minimum THD, so my output voltage is a touch higher at 121V, but also with 0.1% THD (this is probably the lowest it will report). 

Not much difference here with or without the Power Plant.

The location for clean power is not as important as how you bring it into your listening area and how separated it is from the rest of the living quarters. Another expensive endeavor, but what isn't in our hobby.

Might be a stupid question from lack of knowledge on function. All the people who are running battery power for clean low noise sources. Does the power not vary or degrade as the battery powers down? I look at a flashlight that gets dimmer and dimmer as the battery gets weaker. What am I missing here. Not being sarcastic would really like to know.