Cost of leaving a 10W device on ALL YEAR...
- Thread starter NeilF
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10W = 0.01kW
8760 hours in a year
£0.12 per kWh
0.01 x 8760 x 0.12 = £10.51
Which pretty much lines up with the fact that I usually tell people that 1W on 24/7 will add £1 to the bill in a year. Add it all up with everything around that house that's plugged in that you can't actually turn completely off and you see quite a lot on your bill you didn't expect
Cheap electricity by the way o/p, most providers are around 15p per kWh.
8760 hours in a year
£0.12 per kWh
0.01 x 8760 x 0.12 = £10.51
Which pretty much lines up with the fact that I usually tell people that 1W on 24/7 will add £1 to the bill in a year. Add it all up with everything around that house that's plugged in that you can't actually turn completely off and you see quite a lot on your bill you didn't expect
Cheap electricity by the way o/p, most providers are around 15p per kWh.
At rest the average PC is about 150W tops. I think my quad core with 3 or 4 harddisks comes out at about 120W idling. LCD monitor should be about 20-40W. (This is measured using one of those wall plugs that tells you how many kWh etc. you're using)
Soldato
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Math's not a strong point then.
Soldato
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10W for an hour is 0.01kWh
so 24 hours is 0.24kWh.
0.24 * 365 = 87.6kWh in a year.
87.6 * 0.12 (12p per kWh) = £10.51
You seem to have forgotten there are a hundred pennies in a pound.
Associate
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sorry i misread this, i thought it said 10kw lol
The question actually comes from our new Wii. When measuring it's usage on standbye my meter says about 7.5W. Now, I'm dubious about it cos officially it's suppose to be around 1W.
Either way (7.5W or 1W) I wondered if it was worth worrying about. Considering it'll be a less that £10 over the course of the whole year, it's not...
Either way (7.5W or 1W) I wondered if it was worth worrying about. Considering it'll be a less that £10 over the course of the whole year, it's not...
I agree with these figures.
I currently have on:
1 quad core PC with 5HDs
1 dual core WHS server with 10HDs
1 22" monitor
speakers and few other assorted bits.
My mains plug power meter is reading 270W
If I access my server, power jumps to 320W
At switch on, the meter will peak at >300W for ONE PC
Associate
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My cousin got one and it was saying that they were using 5 times the amount of power on their bill per month
The power saving brigade are rapidly turning into a new mafia to stand up there against us all along with the Elven Safety Brigade.
My PC costs about £120 per year to run and it is on 12 or 14 hours per day, 7 days per week, 52 weeks per year.
I wouldn't bother to save £3 per year turning it off for 20 mins at a mealtime every day.
Further, if everybody was stupid enough to do that, statistically the extra power cycling would cause extra expensive hardware failures.
You can rest assured that if there was any benefit to shutting down machines if left unattended for short periods, commerce and industry would be doing it already. PCs are turned off overnight, or if the user is away for a very long meeting. Otherwise constantly turning thm on and off is a nonsense.
My PC costs about £120 per year to run and it is on 12 or 14 hours per day, 7 days per week, 52 weeks per year.
I wouldn't bother to save £3 per year turning it off for 20 mins at a mealtime every day.
Further, if everybody was stupid enough to do that, statistically the extra power cycling would cause extra expensive hardware failures.
You can rest assured that if there was any benefit to shutting down machines if left unattended for short periods, commerce and industry would be doing it already. PCs are turned off overnight, or if the user is away for a very long meeting. Otherwise constantly turning thm on and off is a nonsense.
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I regularly see people complaining about their electricity bills being too high, but then on closer inspection they have computers on 24/7 or left on standby, plasma tellies that draw 40W on standby and 400-500W when watching, Wii, PS3, Sky or digibox permanently on, phone chargers et al stuck in the wall all over the place etc etc etc. Don't call me the "The power saving brigade" just because I'm pointing it out to them, because I know why my bill is so much lower than theirs.
Associate
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Tvs drawing 40w on standby? doesn't it have to be <=1w?
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It does now, because there were plasma screens sucking up to 75W on standby and so much stuff like computer PSUs and mobile chargers eating power. A mate on another forum posted theirs draws 40W sat there on standby, just a few days ago.
It doesn't just ring your bill up, it slaughters our UK emissions targets and loads up the grid massively.
Associate
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Ah fair enough. I guess they have changed chargers too? All the old ones used to stay warm even when not plugged in to the device but they are cold now...
These 2 things annoy me more than any other when trying to save money. People dont realise how much energy it takes to run a sky or digibox! Decoding a digital stream is no small measure!
(RE Wii) Huh? It uses a tiny amount of power on standbye?
Unless Wii connect24 is active!
Well, according to this site - http://www.hardcoreware.net/reviews/review-356-4.htm
A Wii on standby uses 1.3W without Connect24, and 9.6W with it on.
So if we round it up to even 10W, see my original post, and you end up with less than a £1 a month...
You wouldn't even notice it on your bill, so I don't know what happened in your cousin's case? Maybe he left an electric heater on instead
But a Wii on standby wouldn't be the reason.