I am trying to capture costs for starting into homelab/selfhosting.
VPNs, search engines, absolutely everything and anything.
I am trying to capture costs for starting into homelab/selfhosting.
VPNs, search engines, absolutely everything and anything.
Yeah, same. Though at 3-5W … it really is just a very rough guess. Lemme ShitGPT it. Oh, I was way off
A realistic Pi 4B-only estimate is about A$8–A$12 per year in electricity, assuming it is on 24/7 and used for Jellyfin streaming around 10–12 hours per week.
Pi 4B measurements are typically around 2.7–2.85 W at idle, about 5.1 W under moderate server load, and around 6.4 W under full CPU stress. Using Perth/WA’s Synergy Home Plan A1 energy charge of 32.3719 c/kWh, excluding the daily supply charge, that works out very cheaply because the device uses only about 25–36 kWh/year.
Scenario Assumed usage Annual energy Approx. annual cost
Mostly idle 3 W 24/7 26.3 kWh A$8.51/year Idle + 12h/wk Jellyfin 2.7 W idle, 5.1 W streaming 25.1 kWh A$8.14/year Heavier Jellyfin/server use 2.7 W idle, 6.4 W streaming 26.0 kWh A$8.40/year Conservative wall-power estimate 4 W idle, 6.4 W streaming 36.5 kWh A$11.83/year
The bigger swing factor is storage, not the Pi. A USB SSD adds very little; a USB-powered 2.5" hard drive might add a few dollars per year; a powered 3.5" external drive left spinning 24/7 could push the total more into the A$15–A$30/year range.
So, for the Raspberry Pi 4B itself as a Jellyfin box: roughly A$10/year is a good mental estimate.
I went off the power supply maximum output. 5.1 volts, 3 amps, so 15 watts per hour. 24hrs per day, 365 days a year, so 131,400 watt-hours, or 131kilowatt-hours. My electricity is about $0.25/kwh (advertised at 0.09/kwh, but when you add on bullshit fees, the final rate is much higher), so I came up with $32.85 as the maximum amount any device connected to that power supply could cost.
Yep. But that would be 100% CPU, 100% of the time? Real life, it’s probably closer to 2w idle and maybe 5-7W under typical load.
More interesting…I think that technically means you could make a “UPS” for it using what…4xAA batteries?
Oh man…that would be cool. Stupid but cool.