Updated: More thourough investigations into power consumption shows that it is perhaps not quite as bad as it seems below. The meter used below seems to have quite a large error when there is a large difference in phase between voltage and current… So the figures below should probably be seen as wort case using a cos(phi) close to one, which is not always the case.
A friend of mine let me borrow his power meter under the condition that I posted the results here. So here we go. The meter does not have absolute accuracy, but I’d guess the values below are within a watt or so.
- Brodband Router (with phone connection) – Inteno (Bredbandsbolaget standard)
On: ~5W - NAS – WD MyBook World II 1TB
Power adapter alone: 4W
Turned off: 3+4=7W
Sleeping: 8+4=12W
Streaming music, network sharing: 12+4=16W - Printer – Epson Stylus Photo R200
Turned off: ~0 W
On, no print job: 4W - USB Hub 4 Ports – Deltaco UH-410 with separate power supply
On: ~0W - Wlan router – Apple Airport Extreme
On: 14W - Homeplug — Netgear HD Ethernet Adapter HDX101
On: 7W (each) - External har drive – old 2.5″ laptop drive connected to Airport
Sleep: ~0W (power from USB hub) - Computer – Apple Power Book 15 G4
Sleep: ~5W
Idle: ~25W - Router/Music streamer – Apple Airport Express (APX)
On, not streaming: ~2W - Radio – Denon TU-225
Off: ~0W - Amplifier – Nad C350
Off: ~0W
On, not playing any music: ~31W - DVD player – Pioneer DV-410V
Off: ~2W - ”Power Saving” switching outlet from Clas Ohlson
Always: 7W (Seems this is not quite true, cos(fi)=0.1 or so and the meter does not get that) - Phone – Siemens Gigaset 3010 Micro
Base station, not charging: ~4W
That’s it. That means that if I keep my home network and NAS up 24/7, the power consumption is at 40W in standby, not including the custom broadband router used for my internet connection and telephone. That’s probably another 10-15W. Counting on 50W and assuming a power cost of SEK1/kWh, it adds up to more than SEK1 each day. Yikes.
