I'm on someone's Excel spreadsheet at SRP, with the sheet called "Assholes".

I use, at my last check, like 2 megawatts per year, or something obscene like that.

Powering my server stack is a part of that, but it's probably not that impactful. The two A/C, pool, pool heater/cool (like a third A/C unit) ... And my wife keeps the house around 68F all year ... Soooooo.

I really do want solar, but my wife says that project isn't until the late 20s, at best, probably early 2030s.

I really want the redundant A/B power supplies with the red cords and black cords. 

I'm the king of "Isn't that a bit excessive for a homelab?" ... So I think this is right up my alley!

---
Thanks,
Alexander

Sent from my Google Pixel 7 Pro

On Wed, Nov 27, 2024, 11:01 Stephen Partington via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
So solar usually pairs best with some level of power storage. and amazon has some amazing options going right now for far less than what you are getting quoted.

Just the fast search comes up with this kit for a ton less than you are getting quoted.
Bear in mind you will have to add in the cost of connecting it to your panel, but still an interesting baseline.

On Wed, Nov 27, 2024 at 12:41 PM George Toft via PLUG-discuss <plug-discuss@lists.phxlinux.org> wrote:
A friend was looking into solar with a Tesla wall (battery). I looked at
her APS bill - it was $120/month. They were seriously considering
spending $25K to cut down on the peak demand charge. The most they would
save was $20/month. That's an ROI that would never be achieved.

I have solar. APS invited me to buy a battery and they would pay me
$1250 if I let them manage it. The battery was quoted at $15K. Yeah, no.
So let's say I use the battery to keep my 4pm-7pm APS draw minimized,
what is my ROI? Looking at my past bills, my peak demand charge ranges
from $5 to $121 per month. Let's average that out to $65/month. So $15K
to save $65/month gives me an ROI of 230 months. It will be less due to
APS price increases, but that's still 15-20 years out, and by then the
battery would need to be replaced, nullifying any notion of an ROI.

Regards,

George Toft

On 11/26/2024 3:31 PM, Keith Smith via PLUG-discuss wrote:
> Hi,
>
> I have been curious about solar for sometime.
>
> I am looking at my electric bill and I use less than 600k watts a
> month for 1/2 the year.
>
> My math does not seem to work out.
>
> 1) Convert 600000 watts at 120 volts * .1 = 60,000 watts at 12 volts.
> 2) 60,000 watts divided by 30 = 2000 watts at 12 volts per day.
> 3) If I can harvest solar for 4 hours a day that is 2000/4 = 500 watts
> at 12 volts.
>
> That means I only need 500 watts of solar.  This does not take into
> consideration loss of power in the system.
>
> If the system losses 30% then I need around 715 watts of solar panels
> to meet my needs.
>
> I was expecting a lot more.
>
> Any help is much appreciated!!
>
> Keith
>
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Stephen

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