I have a system running 24/7 pulling about 19kWh according to the plug I
have it on. The PSU is about 1650watts in total with about 950w used.




On Wed, Jul 21, 2021, 8:08 AM Retro64XYZ via PLUG-discuss <
plug-discuss@lists.phxlinux.org> wrote:

> My SRP bill is $293.65 and we run our AC hard, have fans going, and my
> wife leaves the blinds open all the time so I know we could save money
> there too. I am running a 24core ThreadRipper, 4bay NAS, 1 POE router, 1
> non-POE router, HAM radio, laser printer, and 4 raspberry PI in a
> cluster with 2 running pi-hole plus an entertainment NUC in the front.
> Our bill goes down a lot in winter. I pay about $75 per month from Jan -
> May and then in June it ramps up hard and then goes back down again.
>
> I don't know the figures but I doubt that a 250W desktop costs $22 per
> month in electricity. But if you are REALLY worried about it, switch to
> a raspberry pi or beaglebone cluster over POE. If your workload is
> capable of taking advantage of parallel processing, it would probably
> save time and money (and look cool which is what really matters right...?)
>
> If you need to be exact, you can buy a device that measures at the plug
> and you can monitor your computer to get exact figures.
>
> On 7/21/21 7:33 AM, Keith Smith via PLUG-discuss wrote:
> >
> >
> > Hi,
> >
> > I just read this quote about the electrical costs to run a web server
> > from home:
> >
> > Cost: While it may sound cheaper to use that computer lying around
> > doing nothing when creating your web server, when you factor in the
> > cost of powering an old computer 24 hours a day, it can get very
> > expensive. A 250W desktop computer running 24 hours per day at 12
> > cents per KW/h is a whopping $262.00 per year!
> >
> > ---
> > I think their math is wrong.
> >
> > The average residential electricity rate in Chandler is 10.85¢/kWh.
> >
> > I'm thinking a low traffic PHP web server running on an old Dell with
> > a 400 watt power supply is not using but maybe 100 watts on average.
> > I've read that the computer should use no more than half the power
> > supply capacity.  Is this correct?
> >
> > If my home web server is using 100 watts an hour that mean 100 watts *
> > 30 days * 24 hours or 72K watts.
> >
> > I'm thinking 72 * .1085 = $7.81 a month.
> >
> > Any thoughts are much appreciated.
> >
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