Power quality with a Tesla Power Wall

June 14, 2021
 by Paul McGowan

6 comments on “Power quality with a Tesla Power Wall”

  1. I would love very much to get away from Florida Power And Light!
    For one thing, they charge me, way too much.
    And on top of that, they lie to me too as well.
    And on top of that, they blame the high electric bills on my window units.
    But I know that can’t be true.
    I have one that I’ve had for almost four years.
    The other one, I’ve had it for a little over five years.
    So you see, both of these window units are fairly new.
    So there’s no way that they could be drawing that kind of currant out of the power meeder outside.
    The other thing is, they don’t supply me with clean power either.
    But right now, getting off of the power grid, is kind of out of the question.
    I also, would love very much to get all of my power, from the sun.
    The problem with that is, I can’t find a Soler company here in Florida, that’s willing to work with my budget.
    So I guess, I’ll have to wait until I’m standing on both of my feet financially to be able to do that.
    I would even be happy with a one half of 1.5MW system powering my whole house.

  2. I’m sure Elon Musk or one of Tesla’s engineers could add additional information to Paul’s response on the Tesla wall. Contact Tesla.

    Paul my workplace installed charging stations for electric vehicles. Our CEO also drives a Tesla, he owns two of them. Does PS Audio plan on doing this in the near future for their employees? I think workplaces have to take on this initiative to move things along smoothly and people will buy more of these electric vehicles. I’m wondering if the government is helping businesses by subsidizing some of the costs to install these stations in parking lots?

  3. Hi Paul. I recently had solar power installed to my home here in Australia. The type installed uses micro inverters on every panel, which is intended to offer a more consistent level of power production as the sun activates individual panels during the course of the day. The system works very well from that point of view and the installation is very well implemented, however the sound of my hi-fi system suffered noticeably. It sounded lifeless and uninvolving by comparison to pre-solar. It would improve marginally in the evening, but not enough to keep me smiling. I’ve been in the audio industry for forty years and am well aware of the effect that power quality has on the sound of equipment. Up until this point though I had no reason to question the quality of what was coming out of the wall. Only when presented with an instant and noticeable degradation in sonics did I feel the need to investigate. I borrowed a P12 Power Plant from Tivoli Hi-Fi in Melbourne. It instantly sorted out the sound of the system, even though it was technically on the edge of it’s abilities given the large mono blocks etc that it was powering. The oscilloscope included in the P12 showed the incoming power sine wave as having top and bottom severely flattened. The sine wave looked more like a square wave… Voltage was running at 255 Volts out of the wall. Here in Aus we are typically around 240 Volts. Incoming THD was 3%. The P12 cleaned everything up and the sound was greatly improved. Subsequently I have installed a P15 Power Plant as this is what the system requires given the demands of the individual components. The sound quality is now well beyond even what the system offered pre-solar. Not exactly a cheap fix, but in my case the sonic improvements are exceptional and not confined to any one part of the audio spectrum. Every part of the systems potential is unlocked. Better bass, treble, soundstage, phase detail etc. etc. I really encourage anyone looking to upgrade the complete presentation of their system to trial a Power Plant, whether using solar power or not. Cheers D M

    1. Great comment HF&HTR! I suspected that some solar inverters might not be able to handle the instantaneous current demands of some power amps. It’s good to hear it confirmed from you and Paul. I’m interested in this because I’ve recently had a quote done for the solar system for the new house I’m planning to build.

      My power service provider provides a web site that allows you to monitor your power usage and I used this to size the proposed solar system for my new house. It turns out that about two-thirds of my usage (around 13kWh per day) is for my hi-fi! So I ended up going for a 12kW, 3-phase solar system with a commercial-grade inverter and Tesla Powerwall. Apart from some other technical reasons for using three phases in the system, it also allows better isolation for my hi-fi system.

      Fortunately, I’ve been using PS Powerplants for over 10 years so I’m already set up for using solar with my hi-fi. I’m using 3 of the older generation P10s (coincidentally also supplied through Tivoli Hi-Fi). One each for my Class A monoblocks and the third for the other components. Like you’ve discovered, the addition of the Powerplants added a huge improvement to the sonic quality of the system. In my opinion, regenerated power rates up there with speaker selection and room setup and treatment as major contributors to sound quality.

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