mac27040 said:
It's a behavioural change power saving device which has saved me £30 in 3 months already.
I think it's a reasonable product, in line with most other energy saving style stuff, but what really bugs me is the ridiculous savings claims.
To have saved £10 in a month, assuming a cost of about 12p KWh, you would need to have saved 83KWh in a month. This figure increases if you pay less for your energy than 12pKWh.
That works out at about 2.7KWh per day.
Let's take my laptop for example, which, at full tilt uses 95W. That means that to save £10 per month I would need to switch it off for
28 hours per day when it would otherwise be on. I notice that the website doesn't mention laptops, but it doesn't make it very clear that this device is pointless if you have one.
If we take a very high spec desktop (only one of my friends still uses a desktop at home but hey ho), it may use 600W at full tilt (if you aren't using it then it will naturally be less), so you'd need to switch it off for 4.5 hours per day when you would otherwise be using it at max capacity (and let's be honest, if you want to use the PC you aren't going to be hitting the Eco Button) in order to save £10 per month. If it's idling away at about 300W then you need to switch it off for 9 hours per day to save that money.
Like I say, it's a good product but I think that it's a vast exageration to say that £10 per month is a realistic saving in the home, unless you routinely leave a very high spec desktop running crunching numbers and burning DVDs when you don't need to for several hours per day then £10 per month is not a realistic saving.
EDIT - Just realised that the company's website doesn't actually say a saving of £10 per month is possible, only £50 per year, which at just over £4 per months sounds a little more like the right ball park for a desktop machine.
